3612991963 has 16 divisors (see below), whose sum is σ = 4379244480. Its totient is φ = 2909869056.

The previous prime is 3612991957. The next prime is 3612991973. The reversal of 3612991963 is 3691992163.

It is not a de Polignac number, because 3612991963 - 2²¹ = 3610894811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3612991913) 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, 48183 + ... + 97711.

It is an arithmetic number, because the mean of its divisors is an integer number (273702780).

Almost surely, 2^3612991963 is an apocalyptic number.

3612991963 is a deficient number, since it is larger than the sum of its proper divisors (766252517).

3612991963 is a wasteful number, since it uses less digits than its factorization.

3612991963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50166.

The product of its digits is 472392, while the sum is 49.

The square root of 3612991963 is about 60108.1688541583. The cubic root of 3612991963 is about 1534.4603298325.

The spelling of 3612991963 in words is "three billion, six hundred twelve million, nine hundred ninety-one thousand, nine hundred sixty-three".