1453869840 has 160 divisors (see below), whose sum is σ = 4684200192. Its totient is φ = 372736000.

The previous prime is 1453869839. The next prime is 1453869841. The reversal of 1453869840 is 489683541.

It is an interprime number because it is at equal distance from previous prime (1453869839) and next prime (1453869841).

It is a super-2 number, since 2×1453869840² = 4227475023323251200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1453869840.

It is not an unprimeable number, because it can be changed into a prime (1453869841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 697600 + ... + 699680.

Almost surely, 2^1453869840 is an apocalyptic number.

1453869840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1453869840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2342100096).

1453869840 is an abundant number, since it is smaller than the sum of its proper divisors (3230330352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1453869840 is a wasteful number, since it uses less digits than its factorization.

1453869840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 1453869840 is about 38129.6451596392. The cubic root of 1453869840 is about 1132.8572171577.

The spelling of 1453869840 in words is "one billion, four hundred fifty-three million, eight hundred sixty-nine thousand, eight hundred forty".