37818442 has 4 divisors (see below), whose sum is σ = 56727666. Its totient is φ = 18909220.

The previous prime is 37818437. The next prime is 37818479. The reversal of 37818442 is 24481873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30151081 + 7667361 = 5491^2 + 2769^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9454609 + ... + 9454612.

Almost surely, 2^37818442 is an apocalyptic number.

37818442 is a deficient number, since it is larger than the sum of its proper divisors (18909224).

37818442 is a wasteful number, since it uses less digits than its factorization.

37818442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18909223.

The product of its digits is 43008, while the sum is 37.

The square root of 37818442 is about 6149.6700724510. The cubic root of 37818442 is about 335.6612527494.

The spelling of 37818442 in words is "thirty-seven million, eight hundred eighteen thousand, four hundred forty-two".