1897746057 has 64 divisors (see below), whose sum is σ = 3038031360. Its totient is φ = 1166579712.

The previous prime is 1897746017. The next prime is 1897746061. The reversal of 1897746057 is 7506477981.

It is not a de Polignac number, because 1897746057 - 2¹⁰ = 1897745033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1897745994 and 1897746012.

It is not an unprimeable number, because it can be changed into a prime (1897746017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6476803 + ... + 6477095.

It is an arithmetic number, because the mean of its divisors is an integer number (47469240).

Almost surely, 2^1897746057 is an apocalyptic number.

1897746057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1897746057 is a deficient number, since it is larger than the sum of its proper divisors (1140285303).

1897746057 is a wasteful number, since it uses less digits than its factorization.

1897746057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 1897746057 is about 43563.1272637766. The cubic root of 1897746057 is about 1238.0723728725.

The spelling of 1897746057 in words is "one billion, eight hundred ninety-seven million, seven hundred forty-six thousand, fifty-seven".