1553901642 has 24 divisors (see below), whose sum is σ = 3393302016. Its totient is φ = 513887976.

The previous prime is 1553901637. The next prime is 1553901653. The reversal of 1553901642 is 2461093551.

1553901642 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 9 + 0 + 1 + 642 = 666.

It is a super-2 number, since 2×1553901642² = 4829220626020592328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1553901597 and 1553901606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337588 + ... + 342159.

It is an arithmetic number, because the mean of its divisors is an integer number (141387584).

Almost surely, 2^1553901642 is an apocalyptic number.

1553901642 is an abundant number, since it is smaller than the sum of its proper divisors (1839400374).

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

1553901642 is a wasteful number, since it uses less digits than its factorization.

1553901642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679882 (or 679879 counting only the distinct ones).

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

The square root of 1553901642 is about 39419.5591299548. The cubic root of 1553901642 is about 1158.2647564161.

The spelling of 1553901642 in words is "one billion, five hundred fifty-three million, nine hundred one thousand, six hundred forty-two".