1897413325531 has 2 divisors, whose sum is σ = 1897413325532. Its totient is φ = 1897413325530.

The previous prime is 1897413325523. The next prime is 1897413325553. The reversal of 1897413325531 is 1355233147981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1897413325531 - 2³ = 1897413325523 is a prime.

It is a super-2 number, since 2×1897413325531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1897413325501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948706662765 + 948706662766.

It is an arithmetic number, because the mean of its divisors is an integer number (948706662766).

Almost surely, 2^{1897413325531} is an apocalyptic number.

1897413325531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897413325531 is an equidigital number, since it uses as much as digits as its factorization.

1897413325531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The spelling of 1897413325531 in words is "one trillion, eight hundred ninety-seven billion, four hundred thirteen million, three hundred twenty-five thousand, five hundred thirty-one".