1539469920 has 192 divisors, whose sum is σ = 5036967936. Its totient is φ = 394813440.

The previous prime is 1539469891. The next prime is 1539470027. The reversal of 1539469920 is 299649351.

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 1539469920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4567992 + ... + 4568328.

It is an arithmetic number, because the mean of its divisors is an integer number (26234208).

Almost surely, 2^1539469920 is an apocalyptic number.

1539469920 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 1539469920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2518483968).

1539469920 is an abundant number, since it is smaller than the sum of its proper divisors (3497498016).

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

1539469920 is a wasteful number, since it uses less digits than its factorization.

1539469920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 1539469920 is about 39236.0793148347. The cubic root of 1539469920 is about 1154.6678379935.

The spelling of 1539469920 in words is "one billion, five hundred thirty-nine million, four hundred sixty-nine thousand, nine hundred twenty".