1492481761 has 4 divisors (see below), whose sum is σ = 1492613892. Its totient is φ = 1492349632.

The previous prime is 1492481743. The next prime is 1492481777. The reversal of 1492481761 is 1671842941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1671842941 = 5413 ⋅308857.

It can be written as a sum of positive squares in 2 ways, for example, as 673091136 + 819390625 = 25944^2 + 28625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492481761 - 2⁵ = 1492481729 is a prime.

It is a super-2 number, since 2×1492481761² = 4455003613835322242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1492481741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47356 + ... + 72301.

It is an arithmetic number, because the mean of its divisors is an integer number (373153473).

Almost surely, 2^1492481761 is an apocalyptic number.

It is an amenable number.

1492481761 is a deficient number, since it is larger than the sum of its proper divisors (132131).

1492481761 is a wasteful number, since it uses less digits than its factorization.

1492481761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132130.

The product of its digits is 96768, while the sum is 43.

The square root of 1492481761 is about 38632.6514880871. The cubic root of 1492481761 is about 1142.7985416552.

The spelling of 1492481761 in words is "one billion, four hundred ninety-two million, four hundred eighty-one thousand, seven hundred sixty-one".