3651561464 has 16 divisors (see below), whose sum is σ = 6857966400. Its totient is φ = 1822770432.

The previous prime is 3651561409. The next prime is 3651561499. The reversal of 3651561464 is 4641651563.

It is a super-2 number, since 2×3651561464² = 26667802250739646592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371129 + ... + 380840.

It is an arithmetic number, because the mean of its divisors is an integer number (428622900).

Almost surely, 2^3651561464 is an apocalyptic number.

It is an amenable number.

3651561464 is a deficient number, since it is larger than the sum of its proper divisors (3206404936).

3651561464 is a wasteful number, since it uses less digits than its factorization.

3651561464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752582 (or 752578 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 3651561464 is about 60428.1512541961. The cubic root of 3651561464 is about 1539.9012507659.

Subtracting 3651561464 from its reverse (4641651563), we obtain a palindrome (990090099).

It can be divided in two parts, 36515 and 61464, that added together give a palindrome (97979).

The spelling of 3651561464 in words is "three billion, six hundred fifty-one million, five hundred sixty-one thousand, four hundred sixty-four".