1916936961 has 16 divisors (see below), whose sum is σ = 2696601600. Its totient is φ = 1207923408.

The previous prime is 1916936941. The next prime is 1916936981. The reversal of 1916936961 is 1696396191.

It is an interprime number because it is at equal distance from previous prime (1916936941) and next prime (1916936981).

It is not a de Polignac number, because 1916936961 - 2¹¹ = 1916934913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1916936941) 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, 13281 + ... + 63326.

It is an arithmetic number, because the mean of its divisors is an integer number (168537600).

Almost surely, 2^1916936961 is an apocalyptic number.

It is an amenable number.

1916936961 is a deficient number, since it is larger than the sum of its proper divisors (779664639).

1916936961 is a wasteful number, since it uses less digits than its factorization.

1916936961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77068.

The product of its digits is 472392, while the sum is 51.

The square root of 1916936961 is about 43782.8386585429. The cubic root of 1916936961 is about 1242.2317079322.

The spelling of 1916936961 in words is "one billion, nine hundred sixteen million, nine hundred thirty-six thousand, nine hundred sixty-one".