3691064642 has 4 divisors (see below), whose sum is σ = 5536596966. Its totient is φ = 1845532320.

The previous prime is 3691064609. The next prime is 3691064681. The reversal of 3691064642 is 2464601963.

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

It can be written as a sum of positive squares in only one way, i.e., 2333952721 + 1357111921 = 48311^2 + 36839^2 .

It is a super-3 number, since 3×3691064642³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3691064642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922766159 + ... + 922766162.

Almost surely, 2^3691064642 is an apocalyptic number.

3691064642 is a deficient number, since it is larger than the sum of its proper divisors (1845532324).

3691064642 is a wasteful number, since it uses less digits than its factorization.

3691064642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845532323.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 3691064642 is about 60754.1327153964. The cubic root of 3691064642 is about 1545.4343122550.

The spelling of 3691064642 in words is "three billion, six hundred ninety-one million, sixty-four thousand, six hundred forty-two".