1553144634 has 24 divisors (see below), whose sum is σ = 3456098100. Its totient is φ = 503722368.

The previous prime is 1553144627. The next prime is 1553144687. The reversal of 1553144634 is 4364413551.

1553144634 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 14 + 4 + 634 = 666.

1553144634 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1532487609 + 20657025 = 39147^2 + 4545^2 .

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, 1165359 + ... + 1166690.

Almost surely, 2^1553144634 is an apocalyptic number.

1553144634 is an abundant number, since it is smaller than the sum of its proper divisors (1902953466).

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

1553144634 is a wasteful number, since it uses less digits than its factorization.

1553144634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332094 (or 2332091 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1553144634 is about 39409.9560263647. The cubic root of 1553144634 is about 1158.0766368066.

The spelling of 1553144634 in words is "one billion, five hundred fifty-three million, one hundred forty-four thousand, six hundred thirty-four".