767982491 has 4 divisors (see below), whose sum is σ = 784322592. Its totient is φ = 751642392.

The previous prime is 767982469. The next prime is 767982503. The reversal of 767982491 is 194289767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194289767 = 7 ⋅27755681.

It is a cyclic number.

It is not a de Polignac number, because 767982491 - 2¹⁸ = 767720347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (767982401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8169980 + ... + 8170073.

It is an arithmetic number, because the mean of its divisors is an integer number (196080648).

Almost surely, 2^767982491 is an apocalyptic number.

767982491 is a deficient number, since it is larger than the sum of its proper divisors (16340101).

767982491 is a wasteful number, since it uses less digits than its factorization.

767982491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16340100.

The product of its digits is 1524096, while the sum is 53.

The square root of 767982491 is about 27712.4970184933. The cubic root of 767982491 is about 915.7644346836.

The spelling of 767982491 in words is "seven hundred sixty-seven million, nine hundred eighty-two thousand, four hundred ninety-one".