37691991234 has 24 divisors (see below), whose sum is σ = 81840872880. Its totient is φ = 12537090648.

The previous prime is 37691991229. The next prime is 37691991241. The reversal of 37691991234 is 43219919673.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2233564 + ... + 2250375.

It is an arithmetic number, because the mean of its divisors is an integer number (3410036370).

Almost surely, 2^37691991234 is an apocalyptic number.

37691991234 is an abundant number, since it is smaller than the sum of its proper divisors (44148881646).

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

37691991234 is a wasteful number, since it uses less digits than its factorization.

37691991234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484414 (or 4484411 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

It can be divided in two parts, 3769 and 1991234, that added together give a triangular number (1995003 = T₁₉₉₇).

The spelling of 37691991234 in words is "thirty-seven billion, six hundred ninety-one million, nine hundred ninety-one thousand, two hundred thirty-four".