1057156406 has 16 divisors (see below), whose sum is σ = 1659702528. Its totient is φ = 504061800.

The previous prime is 1057156367. The next prime is 1057156421. The reversal of 1057156406 is 6046517501.

It is a super-2 number, since 2×1057156406² = 2235159333493673672, 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19490 + ... + 49941.

It is an arithmetic number, because the mean of its divisors is an integer number (103731408).

Almost surely, 2^1057156406 is an apocalyptic number.

1057156406 is a deficient number, since it is larger than the sum of its proper divisors (602546122).

1057156406 is a wasteful number, since it uses less digits than its factorization.

1057156406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69787.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1057156406 is about 32513.9417173618. The cubic root of 1057156406 is about 1018.7002559374.

The spelling of 1057156406 in words is "one billion, fifty-seven million, one hundred fifty-six thousand, four hundred six".