1952997537 has 4 divisors (see below), whose sum is σ = 2603996720. Its totient is φ = 1301998356.

The previous prime is 1952997499. The next prime is 1952997559. The reversal of 1952997537 is 7357992591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7357992591 = 3 ⋅2452664197.

It is not a de Polignac number, because 1952997537 - 2²⁶ = 1885888673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1952997037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325499587 + ... + 325499592.

It is an arithmetic number, because the mean of its divisors is an integer number (650999180).

Almost surely, 2^1952997537 is an apocalyptic number.

It is an amenable number.

1952997537 is a deficient number, since it is larger than the sum of its proper divisors (650999183).

1952997537 is an equidigital number, since it uses as much as digits as its factorization.

1952997537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650999182.

The product of its digits is 5358150, while the sum is 57.

The square root of 1952997537 is about 44192.7317214041. The cubic root of 1952997537 is about 1249.9728073018.

The spelling of 1952997537 in words is "one billion, nine hundred fifty-two million, nine hundred ninety-seven thousand, five hundred thirty-seven".