3661426415 has 4 divisors (see below), whose sum is σ = 4393711704. Its totient is φ = 2929141128.

The previous prime is 3661426343. The next prime is 3661426421. The reversal of 3661426415 is 5146241663.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3661426415 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366142637 + ... + 366142646.

It is an arithmetic number, because the mean of its divisors is an integer number (1098427926).

Almost surely, 2^3661426415 is an apocalyptic number.

3661426415 is a deficient number, since it is larger than the sum of its proper divisors (732285289).

3661426415 is an equidigital number, since it uses as much as digits as its factorization.

3661426415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732285288.

The product of its digits is 103680, while the sum is 38.

The square root of 3661426415 is about 60509.7216569371. The cubic root of 3661426415 is about 1541.2867211672.

The spelling of 3661426415 in words is "three billion, six hundred sixty-one million, four hundred twenty-six thousand, four hundred fifteen".