37819940 has 12 divisors (see below), whose sum is σ = 79421916. Its totient is φ = 15127968.

The previous prime is 37819921. The next prime is 37819961. The reversal of 37819940 is 4991873.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10278436 + 27541504 = 3206^2 + 5248^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945479 + ... + 945518.

It is an arithmetic number, because the mean of its divisors is an integer number (6618493).

Almost surely, 2^37819940 is an apocalyptic number.

It is an amenable number.

37819940 is an abundant number, since it is smaller than the sum of its proper divisors (41601976).

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

37819940 is a wasteful number, since it uses less digits than its factorization.

37819940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891006 (or 1891004 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 37819940 is about 6149.7918663968. The cubic root of 37819940 is about 335.6656845723.

The spelling of 37819940 in words is "thirty-seven million, eight hundred nineteen thousand, nine hundred forty".