1897923023 has 2 divisors, whose sum is σ = 1897923024. Its totient is φ = 1897923022.

The previous prime is 1897923007. The next prime is 1897923037. The reversal of 1897923023 is 3203297981.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1897923023 - 2⁴ = 1897923007 is a prime.

It is a super-2 number, since 2×1897923023² = 7204223602466917058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1897923043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948961511 + 948961512.

It is an arithmetic number, because the mean of its divisors is an integer number (948961512).

Almost surely, 2^1897923023 is an apocalyptic number.

1897923023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897923023 is an equidigital number, since it uses as much as digits as its factorization.

1897923023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1897923023 is about 43565.1583607818. The cubic root of 1897923023 is about 1238.1108553492.

The spelling of 1897923023 in words is "one billion, eight hundred ninety-seven million, nine hundred twenty-three thousand, twenty-three".