92138649381 has 24 divisors (see below), whose sum is σ = 141021666240. Its totient is φ = 57807432000.

The previous prime is 92138649311. The next prime is 92138649431. The reversal of 92138649381 is 18394683129.

92138649381 is a `hidden beast` number, since 9 + 213 + 8 + 6 + 49 + 381 = 666.

It is not a de Polignac number, because 92138649381 - 2¹¹ = 92138647333 is a prime.

It is a super-2 number, since 2×92138649381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92138649311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1758360 + ... + 1810001.

It is an arithmetic number, because the mean of its divisors is an integer number (5875902760).

Almost surely, 2^92138649381 is an apocalyptic number.

It is an amenable number.

92138649381 is a deficient number, since it is larger than the sum of its proper divisors (48883016859).

92138649381 is a wasteful number, since it uses less digits than its factorization.

92138649381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568537 (or 3568534 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 92138649381 in words is "ninety-two billion, one hundred thirty-eight million, six hundred forty-nine thousand, three hundred eighty-one".