1557043036 has 6 divisors (see below), whose sum is σ = 2724825320. Its totient is φ = 778521516.

The previous prime is 1557043009. The next prime is 1557043049. The reversal of 1557043036 is 6303407551.

It is a junction number, because it is equal to n+sod(n) for n = 1557042992 and 1557043010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194630376 + ... + 194630383.

Almost surely, 2^1557043036 is an apocalyptic number.

It is an amenable number.

1557043036 is a deficient number, since it is larger than the sum of its proper divisors (1167782284).

1557043036 is a wasteful number, since it uses less digits than its factorization.

1557043036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389260763 (or 389260761 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 1557043036 is about 39459.3846378780. The cubic root of 1557043036 is about 1159.0447536134.

The spelling of 1557043036 in words is "one billion, five hundred fifty-seven million, forty-three thousand, thirty-six".