1018817457 has 24 divisors (see below), whose sum is σ = 1581408000. Its totient is φ = 581738976.

The previous prime is 1018817399. The next prime is 1018817461. The reversal of 1018817457 is 7547188101.

It is not a de Polignac number, because 1018817457 - 2²² = 1014623153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1018817467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373344 + ... + 376062.

It is an arithmetic number, because the mean of its divisors is an integer number (65892000).

Almost surely, 2^1018817457 is an apocalyptic number.

It is an amenable number.

1018817457 is a deficient number, since it is larger than the sum of its proper divisors (562590543).

1018817457 is a wasteful number, since it uses less digits than its factorization.

1018817457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 42.

The square root of 1018817457 is about 31918.9200475204. The cubic root of 1018817457 is about 1006.2335478091.

The spelling of 1018817457 in words is "one billion, eighteen million, eight hundred seventeen thousand, four hundred fifty-seven".