1652491920 has 160 divisors (see below), whose sum is σ = 5327337600. Its totient is φ = 423227392.

The previous prime is 1652491913. The next prime is 1652491927. The reversal of 1652491920 is 291942561.

It is an interprime number because it is at equal distance from previous prime (1652491913) and next prime (1652491927).

It is not an unprimeable number, because it can be changed into a prime (1652491927) 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, 1621171 + ... + 1622189.

It is an arithmetic number, because the mean of its divisors is an integer number (33295860).

Almost surely, 2^1652491920 is an apocalyptic number.

1652491920 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 1652491920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663668800).

1652491920 is an abundant number, since it is smaller than the sum of its proper divisors (3674845680).

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

1652491920 is a wasteful number, since it uses less digits than its factorization.

1652491920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1652491920 is about 40650.8538655709. The cubic root of 1652491920 is about 1182.2603232727.

The spelling of 1652491920 in words is "one billion, six hundred fifty-two million, four hundred ninety-one thousand, nine hundred twenty".