1690656012158 has 64 divisors (see below), whose sum is σ = 2678203554048. Its totient is φ = 799469637120.

The previous prime is 1690656012091. The next prime is 1690656012193. The reversal of 1690656012158 is 8512106560961.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 452892860 + ... + 452896592.

It is an arithmetic number, because the mean of its divisors is an integer number (41846930532).

Almost surely, 2^{1690656012158} is an apocalyptic number.

1690656012158 is a deficient number, since it is larger than the sum of its proper divisors (987547541890).

1690656012158 is a wasteful number, since it uses less digits than its factorization.

1690656012158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 1690656012158 in words is "one trillion, six hundred ninety billion, six hundred fifty-six million, twelve thousand, one hundred fifty-eight".