1491739116 has 24 divisors (see below), whose sum is σ = 3977971200. Its totient is φ = 426211152.

The previous prime is 1491739097. The next prime is 1491739141. The reversal of 1491739116 is 6119371941.

It is a super-2 number, since 2×1491739116² = 4450571180408922912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8879316 + ... + 8879483.

It is an arithmetic number, because the mean of its divisors is an integer number (165748800).

Almost surely, 2^1491739116 is an apocalyptic number.

It is an amenable number.

1491739116 is an abundant number, since it is smaller than the sum of its proper divisors (2486232084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491739116 is a wasteful number, since it uses less digits than its factorization.

1491739116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17758813 (or 17758811 counting only the distinct ones).

The product of its digits is 40824, while the sum is 42.

The square root of 1491739116 is about 38623.0386686496. The cubic root of 1491739116 is about 1142.6089615765.

The spelling of 1491739116 in words is "one billion, four hundred ninety-one million, seven hundred thirty-nine thousand, one hundred sixteen".