1455163920 has 320 divisors, whose sum is σ = 5774154240. Its totient is φ = 329951232.

The previous prime is 1455163891. The next prime is 1455163921. The reversal of 1455163920 is 293615541.

1455163920 is a `hidden beast` number, since 14 + 5 + 5 + 1 + 639 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1455163921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2373534 + ... + 2374146.

It is an arithmetic number, because the mean of its divisors is an integer number (18044232).

Almost surely, 2^1455163920 is an apocalyptic number.

1455163920 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 1455163920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887077120).

1455163920 is an abundant number, since it is smaller than the sum of its proper divisors (4318990320).

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

1455163920 is a wasteful number, since it uses less digits than its factorization.

1455163920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1455163920 is about 38146.6108586333. The cubic root of 1455163920 is about 1133.1932337393.

The spelling of 1455163920 in words is "one billion, four hundred fifty-five million, one hundred sixty-three thousand, nine hundred twenty".