975643619 has 2 divisors, whose sum is σ = 975643620. Its totient is φ = 975643618.

The previous prime is 975643579. The next prime is 975643621. The reversal of 975643619 is 916346579.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 975643619 - 2¹² = 975639523 is a prime.

It is a super-2 number, since 2×975643619² = 1903760942590834322, which contains 22 as substring.

Together with 975643621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (975643679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487821809 + 487821810.

It is an arithmetic number, because the mean of its divisors is an integer number (487821810).

Almost surely, 2^975643619 is an apocalyptic number.

975643619 is a deficient number, since it is larger than the sum of its proper divisors (1).

975643619 is an equidigital number, since it uses as much as digits as its factorization.

975643619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 975643619 is about 31235.2944439459. The cubic root of 975643619 is about 991.8143848619.

The spelling of 975643619 in words is "nine hundred seventy-five million, six hundred forty-three thousand, six hundred nineteen".