3616978406 has 4 divisors (see below), whose sum is σ = 5425467612. Its totient is φ = 1808489202.

The previous prime is 3616978381. The next prime is 3616978433. The reversal of 3616978406 is 6048796163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6048796163 = 17 ⋅355811539.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904244600 + ... + 904244603.

It is an arithmetic number, because the mean of its divisors is an integer number (1356366903).

Almost surely, 2^3616978406 is an apocalyptic number.

3616978406 is a deficient number, since it is larger than the sum of its proper divisors (1808489206).

3616978406 is a wasteful number, since it uses less digits than its factorization.

3616978406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808489205.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 3616978406 is about 60141.3202881347. The cubic root of 3616978406 is about 1535.0244781718.

The spelling of 3616978406 in words is "three billion, six hundred sixteen million, nine hundred seventy-eight thousand, four hundred six".