1549869056 has 112 divisors (see below), whose sum is σ = 3397178880. Its totient is φ = 703856640.

The previous prime is 1549869047. The next prime is 1549869067. The reversal of 1549869056 is 6509689451.

It is a happy number.

It is a super-2 number, since 2×1549869056² = 4804188181492662272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1549868989 and 1549869007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4317005 + ... + 4317363.

Almost surely, 2^1549869056 is an apocalyptic number.

1549869056 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 1549869056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698589440).

1549869056 is an abundant number, since it is smaller than the sum of its proper divisors (1847309824).

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

1549869056 is an equidigital number, since it uses as much as digits as its factorization.

1549869056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 53.

The square root of 1549869056 is about 39368.3763444722. The cubic root of 1549869056 is about 1157.2619369313.

The spelling of 1549869056 in words is "one billion, five hundred forty-nine million, eight hundred sixty-nine thousand, fifty-six".