1523149056 has 576 divisors, whose sum is σ = 5604157440. Its totient is φ = 401448960.

The previous prime is 1523149027. The next prime is 1523149081. The reversal of 1523149056 is 6509413251.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×1523149056² = 4639966093587382272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1523149056.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22733535 + ... + 22733601.

It is an arithmetic number, because the mean of its divisors is an integer number (9729440).

Almost surely, 2^1523149056 is an apocalyptic number.

1523149056 is a gapful number since it is divisible by the number (16) 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 1523149056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802078720).

1523149056 is an abundant number, since it is smaller than the sum of its proper divisors (4081008384).

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

1523149056 is a wasteful number, since it uses less digits than its factorization.

1523149056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 119 counting only the distinct ones).

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

The square root of 1523149056 is about 39027.5422746552. The cubic root of 1523149056 is about 1150.5728855776.

The spelling of 1523149056 in words is "one billion, five hundred twenty-three million, one hundred forty-nine thousand, fifty-six".