3642869391 has 16 divisors (see below), whose sum is σ = 5645126400. Its totient is φ = 2046356928.

The previous prime is 3642869389. The next prime is 3642869401. The reversal of 3642869391 is 1939682463.

3642869391 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3642869391 - 2¹ = 3642869389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642869291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468846 + ... + 1471323.

It is an arithmetic number, because the mean of its divisors is an integer number (352820400).

Almost surely, 2^3642869391 is an apocalyptic number.

3642869391 is a deficient number, since it is larger than the sum of its proper divisors (2002257009).

3642869391 is a wasteful number, since it uses less digits than its factorization.

3642869391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940238.

The product of its digits is 1679616, while the sum is 51.

The square root of 3642869391 is about 60356.1876778181. The cubic root of 3642869391 is about 1538.6784342936.

The spelling of 3642869391 in words is "three billion, six hundred forty-two million, eight hundred sixty-nine thousand, three hundred ninety-one".