1556153456 has 160 divisors (see below), whose sum is σ = 3749760000. Its totient is φ = 615767040.

The previous prime is 1556153419. The next prime is 1556153461. The reversal of 1556153456 is 6543516551.

It is a super-2 number, since 2×1556153456² = 4843227157241487872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3118295 + ... + 3118793.

It is an arithmetic number, because the mean of its divisors is an integer number (23436000).

Almost surely, 2^1556153456 is an apocalyptic number.

1556153456 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 1556153456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874880000).

1556153456 is an abundant number, since it is smaller than the sum of its proper divisors (2193606544).

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

1556153456 is a wasteful number, since it uses less digits than its factorization.

1556153456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 601 counting only the distinct ones).

The product of its digits is 270000, while the sum is 41.

The square root of 1556153456 is about 39448.1109306897. The cubic root of 1556153456 is about 1158.8239805566.

The spelling of 1556153456 in words is "one billion, five hundred fifty-six million, one hundred fifty-three thousand, four hundred fifty-six".