1158497499 has 8 divisors (see below), whose sum is σ = 1555030800. Its totient is φ = 767147936.

The previous prime is 1158497477. The next prime is 1158497533. The reversal of 1158497499 is 9947948511.

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

It is a cyclic number.

It is not a de Polignac number, because 1158497499 - 2⁵ = 1158497467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1158492499) 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, 1295412 + ... + 1296305.

It is an arithmetic number, because the mean of its divisors is an integer number (194378850).

Almost surely, 2^1158497499 is an apocalyptic number.

1158497499 is a deficient number, since it is larger than the sum of its proper divisors (396533301).

1158497499 is a wasteful number, since it uses less digits than its factorization.

1158497499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591869.

The product of its digits is 3265920, while the sum is 57.

The square root of 1158497499 is about 34036.7081105092. The cubic root of 1158497499 is about 1050.2637278584.

The spelling of 1158497499 in words is "one billion, one hundred fifty-eight million, four hundred ninety-seven thousand, four hundred ninety-nine".