1491397358 has 24 divisors (see below), whose sum is σ = 2482871664. Its totient is φ = 671315040.

The previous prime is 1491397289. The next prime is 1491397367. The reversal of 1491397358 is 8537931941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4991 + ... + 54842.

It is an arithmetic number, because the mean of its divisors is an integer number (103452986).

Almost surely, 2^1491397358 is an apocalyptic number.

1491397358 is a deficient number, since it is larger than the sum of its proper divisors (991474306).

1491397358 is a wasteful number, since it uses less digits than its factorization.

1491397358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59960 (or 59949 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 1491397358 is about 38618.6141387803. The cubic root of 1491397358 is about 1142.5216975292.

The spelling of 1491397358 in words is "one billion, four hundred ninety-one million, three hundred ninety-seven thousand, three hundred fifty-eight".