1972397355 has 8 divisors (see below), whose sum is σ = 3155835792. Its totient is φ = 1051945248.

The previous prime is 1972397303. The next prime is 1972397359. The reversal of 1972397355 is 5537932791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1972397355 - 2⁸ = 1972397099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1972397298 and 1972397307.

It is not an unprimeable number, because it can be changed into a prime (1972397359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65746564 + ... + 65746593.

It is an arithmetic number, because the mean of its divisors is an integer number (394479474).

Almost surely, 2^1972397355 is an apocalyptic number.

1972397355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1972397355 is a deficient number, since it is larger than the sum of its proper divisors (1183438437).

1972397355 is a wasteful number, since it uses less digits than its factorization.

1972397355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131493165.

The product of its digits is 1786050, while the sum is 51.

The square root of 1972397355 is about 44411.6803892850. The cubic root of 1972397355 is about 1254.0979862587.

The spelling of 1972397355 in words is "one billion, nine hundred seventy-two million, three hundred ninety-seven thousand, three hundred fifty-five".