1973873637 has 16 divisors (see below), whose sum is σ = 2938960000. Its totient is φ = 1309299552.

The previous prime is 1973873623. The next prime is 1973873663. The reversal of 1973873637 is 7363783791.

It is a happy number.

It is not a de Polignac number, because 1973873637 - 2¹⁴ = 1973857253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973873687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178312 + ... + 189057.

It is an arithmetic number, because the mean of its divisors is an integer number (183685000).

Almost surely, 2^1973873637 is an apocalyptic number.

It is an amenable number.

1973873637 is a deficient number, since it is larger than the sum of its proper divisors (965086363).

1973873637 is a wasteful number, since it uses less digits than its factorization.

1973873637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367577 (or 367571 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The square root of 1973873637 is about 44428.2977054039. The cubic root of 1973873637 is about 1254.4107935072.

The spelling of 1973873637 in words is "one billion, nine hundred seventy-three million, eight hundred seventy-three thousand, six hundred thirty-seven".