1916497077 has 16 divisors (see below), whose sum is σ = 2789114880. Its totient is φ = 1160895600.

The previous prime is 1916497067. The next prime is 1916497081. The reversal of 1916497077 is 7707946191.

It is not a de Polignac number, because 1916497077 - 2⁴ = 1916497061 is a prime.

It is a super-2 number, since 2×1916497077² = 7345922092299087858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916497007) 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, 51924 + ... + 80802.

It is an arithmetic number, because the mean of its divisors is an integer number (174319680).

Almost surely, 2^1916497077 is an apocalyptic number.

It is an amenable number.

1916497077 is a deficient number, since it is larger than the sum of its proper divisors (872617803).

1916497077 is a wasteful number, since it uses less digits than its factorization.

1916497077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30904.

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 1916497077 is about 43777.8148952183. The cubic root of 1916497077 is about 1242.1366813930.

The spelling of 1916497077 in words is "one billion, nine hundred sixteen million, four hundred ninety-seven thousand, seventy-seven".