37818781945 has 32 divisors (see below), whose sum is σ = 52995161088. Its totient is φ = 25368718848.

The previous prime is 37818781943. The next prime is 37818782003. The reversal of 37818781945 is 54918781873.

37818781945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 37818781945 - 2¹ = 37818781943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37818781943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4425717 + ... + 4434253.

It is an arithmetic number, because the mean of its divisors is an integer number (1656098784).

Almost surely, 2^37818781945 is an apocalyptic number.

37818781945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

37818781945 is a deficient number, since it is larger than the sum of its proper divisors (15176379143).

37818781945 is a wasteful number, since it uses less digits than its factorization.

37818781945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289.

The product of its digits is 13547520, while the sum is 61.

The spelling of 37818781945 in words is "thirty-seven billion, eight hundred eighteen million, seven hundred eighty-one thousand, nine hundred forty-five".