1916239433 has 16 divisors (see below), whose sum is σ = 2061720000. Its totient is φ = 1775442240.

The previous prime is 1916239399. The next prime is 1916239453. The reversal of 1916239433 is 3349326191.

It is a cyclic number.

It is not a de Polignac number, because 1916239433 - 2¹² = 1916235337 is a prime.

It is a super-2 number, since 2×1916239433² = 7343947129168322978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1916239453) 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, 330443 + ... + 336191.

It is an arithmetic number, because the mean of its divisors is an integer number (128857500).

Almost surely, 2^1916239433 is an apocalyptic number.

It is an amenable number.

1916239433 is a deficient number, since it is larger than the sum of its proper divisors (145480567).

1916239433 is a wasteful number, since it uses less digits than its factorization.

1916239433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152.

The product of its digits is 104976, while the sum is 41.

The square root of 1916239433 is about 43774.8721642908. The cubic root of 1916239433 is about 1242.0810167451.

The spelling of 1916239433 in words is "one billion, nine hundred sixteen million, two hundred thirty-nine thousand, four hundred thirty-three".