3651620442 has 16 divisors (see below), whose sum is σ = 7305022560. Its totient is φ = 1216909872.

The previous prime is 3651620437. The next prime is 3651620443. The reversal of 3651620442 is 2440261563.

It is not an unprimeable number, because it can be changed into a prime (3651620443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46813 + ... + 97440.

It is an arithmetic number, because the mean of its divisors is an integer number (456563910).

Almost surely, 2^3651620442 is an apocalyptic number.

3651620442 is an abundant number, since it is smaller than the sum of its proper divisors (3653402118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3651620442 is a wasteful number, since it uses less digits than its factorization.

3651620442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148477.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 3651620442 is about 60428.6392532547. The cubic root of 3651620442 is about 1539.9095412656.

The spelling of 3651620442 in words is "three billion, six hundred fifty-one million, six hundred twenty thousand, four hundred forty-two".