1972418255 has 4 divisors (see below), whose sum is σ = 2366901912. Its totient is φ = 1577934600.

The previous prime is 1972418233. The next prime is 1972418263. The reversal of 1972418255 is 5528142791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5528142791 = 41 ⋅134832751.

It is not a de Polignac number, because 1972418255 - 2⁶ = 1972418191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197241821 + ... + 197241830.

It is an arithmetic number, because the mean of its divisors is an integer number (591725478).

Almost surely, 2^1972418255 is an apocalyptic number.

1972418255 is a deficient number, since it is larger than the sum of its proper divisors (394483657).

1972418255 is an equidigital number, since it uses as much as digits as its factorization.

1972418255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394483656.

The product of its digits is 201600, while the sum is 44.

The square root of 1972418255 is about 44411.9156871216. The cubic root of 1972418255 is about 1254.1024158184.

The spelling of 1972418255 in words is "one billion, nine hundred seventy-two million, four hundred eighteen thousand, two hundred fifty-five".