19957092126 has 16 divisors (see below), whose sum is σ = 39915638400. Its totient is φ = 6652121688.

The previous prime is 19957092121. The next prime is 19957092131. The reversal of 19957092126 is 62129075991.

It is an interprime number because it is at equal distance from previous prime (19957092121) and next prime (19957092131).

It is a super-2 number, since 2×19957092126² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19957092121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212535 + ... + 291693.

It is an arithmetic number, because the mean of its divisors is an integer number (2494727400).

Almost surely, 2^19957092126 is an apocalyptic number.

19957092126 is an abundant number, since it is smaller than the sum of its proper divisors (19958546274).

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

19957092126 is a wasteful number, since it uses less digits than its factorization.

19957092126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121183.

The product of its (nonzero) digits is 612360, while the sum is 51.

The spelling of 19957092126 in words is "nineteen billion, nine hundred fifty-seven million, ninety-two thousand, one hundred twenty-six".