19942601031 has 12 divisors (see below), whose sum is σ = 29872867752. Its totient is φ = 13295067192.

The previous prime is 19942600999. The next prime is 19942601057. The reversal of 19942601031 is 13010624991.

It is a happy number.

19942601031 is a `hidden beast` number, since 1 + 9 + 9 + 42 + 601 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 19942601031 - 2⁵ = 19942600999 is a prime.

It is a super-2 number, since 2×19942601031² (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 (19942601431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41033916 + ... + 41034401.

It is an arithmetic number, because the mean of its divisors is an integer number (2489405646).

Almost surely, 2^19942601031 is an apocalyptic number.

19942601031 is a deficient number, since it is larger than the sum of its proper divisors (9930266721).

19942601031 is an frugal number, since it uses more digits than its factorization.

19942601031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82068332 (or 82068320 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 19942601031 in words is "nineteen billion, nine hundred forty-two million, six hundred one thousand, thirty-one".