1158201897 has 16 divisors (see below), whose sum is σ = 1557728832. Its totient is φ = 765434880.

The previous prime is 1158201893. The next prime is 1158201899. The reversal of 1158201897 is 7981028511.

It is not a de Polignac number, because 1158201897 - 2² = 1158201893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1158201893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160593 + ... + 167649.

It is an arithmetic number, because the mean of its divisors is an integer number (97358052).

Almost surely, 2^1158201897 is an apocalyptic number.

It is an amenable number.

1158201897 is a deficient number, since it is larger than the sum of its proper divisors (399526935).

1158201897 is a wasteful number, since it uses less digits than its factorization.

1158201897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528.

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 1158201897 is about 34032.3654335105. The cubic root of 1158201897 is about 1050.1743918958.

The spelling of 1158201897 in words is "one billion, one hundred fifty-eight million, two hundred one thousand, eight hundred ninety-seven".