1916964406 has 16 divisors (see below), whose sum is σ = 3340098720. Its totient is φ = 808087680.

The previous prime is 1916964377. The next prime is 1916964437. The reversal of 1916964406 is 6044696191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121491 + ... + 1123198.

It is an arithmetic number, because the mean of its divisors is an integer number (208756170).

Almost surely, 2^1916964406 is an apocalyptic number.

1916964406 is a deficient number, since it is larger than the sum of its proper divisors (1423134314).

1916964406 is a wasteful number, since it uses less digits than its factorization.

1916964406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244759.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1916964406 is about 43783.1520793101. The cubic root of 1916964406 is about 1242.2376362938.

The spelling of 1916964406 in words is "one billion, nine hundred sixteen million, nine hundred sixty-four thousand, four hundred six".