1461477664 has 12 divisors (see below), whose sum is σ = 2877284214. Its totient is φ = 730738816.

The previous prime is 1461477659. The next prime is 1461477683. The reversal of 1461477664 is 4667741641.

It can be written as a sum of positive squares in only one way, i.e., 860835600 + 600642064 = 29340^2 + 24508^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22835557 + ... + 22835620.

Almost surely, 2^1461477664 is an apocalyptic number.

It is an amenable number.

1461477664 is a deficient number, since it is larger than the sum of its proper divisors (1415806550).

1461477664 is an equidigital number, since it uses as much as digits as its factorization.

1461477664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45671187 (or 45671179 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 1461477664 is about 38229.2775762242. The cubic root of 1461477664 is about 1134.8297891430.

The spelling of 1461477664 in words is "one billion, four hundred sixty-one million, four hundred seventy-seven thousand, six hundred sixty-four".