1491746330 has 8 divisors (see below), whose sum is σ = 2685143412. Its totient is φ = 596698528.

The previous prime is 1491746293. The next prime is 1491746359. The reversal of 1491746330 is 336471941.

It can be written as a sum of positive squares in 2 ways, for example, as 1491736129 + 10201 = 38623^2 + 101^2 .

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

It is a super-2 number, since 2×1491746330² = 4450614226136937800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74587307 + ... + 74587326.

Almost surely, 2^1491746330 is an apocalyptic number.

1491746330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1491746330 is a deficient number, since it is larger than the sum of its proper divisors (1193397082).

1491746330 is a wasteful number, since it uses less digits than its factorization.

1491746330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149174640.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 1491746330 is about 38623.1320583922. The cubic root of 1491746330 is about 1142.6108034463.

The spelling of 1491746330 in words is "one billion, four hundred ninety-one million, seven hundred forty-six thousand, three hundred thirty".