1972137554 has 4 divisors (see below), whose sum is σ = 2958206334. Its totient is φ = 986068776.

The previous prime is 1972137551. The next prime is 1972137611. The reversal of 1972137554 is 4557312791.

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., 1233765625 + 738371929 = 35125^2 + 27173^2 .

It is a super-3 number, since 3×1972137554³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1972137551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493034387 + ... + 493034390.

Almost surely, 2^1972137554 is an apocalyptic number.

1972137554 is a deficient number, since it is larger than the sum of its proper divisors (986068780).

1972137554 is an equidigital number, since it uses as much as digits as its factorization.

1972137554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986068779.

The product of its digits is 264600, while the sum is 44.

The square root of 1972137554 is about 44408.7553754887. The cubic root of 1972137554 is about 1254.0429212526.

It can be divided in two parts, 19721 and 37554, that added together give a palindrome (57275).

The spelling of 1972137554 in words is "one billion, nine hundred seventy-two million, one hundred thirty-seven thousand, five hundred fifty-four".