1237485971 has 4 divisors (see below), whose sum is σ = 1237974000. Its totient is φ = 1236997944.

The previous prime is 1237485967. The next prime is 1237486007. The reversal of 1237485971 is 1795847321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1795847321 = 223 ⋅8053127.

It is a cyclic number.

It is not a de Polignac number, because 1237485971 - 2² = 1237485967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1237485961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240191 + ... + 245288.

It is an arithmetic number, because the mean of its divisors is an integer number (309493500).

Almost surely, 2^1237485971 is an apocalyptic number.

1237485971 is a deficient number, since it is larger than the sum of its proper divisors (488029).

1237485971 is an equidigital number, since it uses as much as digits as its factorization.

1237485971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488028.

The product of its digits is 423360, while the sum is 47.

The square root of 1237485971 is about 35177.9187985873. The cubic root of 1237485971 is about 1073.6105274601.

The spelling of 1237485971 in words is "one billion, two hundred thirty-seven million, four hundred eighty-five thousand, nine hundred seventy-one".