3732946561 has 4 divisors (see below), whose sum is σ = 3853364224. Its totient is φ = 3612528900.

The previous prime is 3732946541. The next prime is 3732946571. The reversal of 3732946561 is 1656492373.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1656492373 = 41 ⋅40402253.

It is a cyclic number.

It is not a de Polignac number, because 3732946561 - 2¹⁹ = 3732422273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3732946531) 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, 60208785 + ... + 60208846.

It is an arithmetic number, because the mean of its divisors is an integer number (963341056).

Almost surely, 2^3732946561 is an apocalyptic number.

3732946561 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3732946561 is a deficient number, since it is larger than the sum of its proper divisors (120417663).

3732946561 is a wasteful number, since it uses less digits than its factorization.

3732946561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120417662.

The product of its digits is 816480, while the sum is 46.

The square root of 3732946561 is about 61097.8441600029. The cubic root of 3732946561 is about 1551.2576073093.

The spelling of 3732946561 in words is "three billion, seven hundred thirty-two million, nine hundred forty-six thousand, five hundred sixty-one".