1012197457 has 8 divisors (see below), whose sum is σ = 1023224832. Its totient is φ = 1001190000.

The previous prime is 1012197437. The next prime is 1012197479. The reversal of 1012197457 is 7547912101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012197457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012197437) 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, 111898 + ... + 120604.

It is an arithmetic number, because the mean of its divisors is an integer number (127903104).

Almost surely, 2^1012197457 is an apocalyptic number.

It is an amenable number.

1012197457 is a deficient number, since it is larger than the sum of its proper divisors (11027375).

1012197457 is a wasteful number, since it uses less digits than its factorization.

1012197457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9959.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1012197457 is about 31815.0507936102. The cubic root of 1012197457 is about 1004.0493992323.

The spelling of 1012197457 in words is "one billion, twelve million, one hundred ninety-seven thousand, four hundred fifty-seven".