536778891 has 24 divisors (see below), whose sum is σ = 854568624. Its totient is φ = 321960960.

The previous prime is 536778887. The next prime is 536778901. The reversal of 536778891 is 198877635.

It is not a de Polignac number, because 536778891 - 2² = 536778887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (536778821) 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 23 ways as a sum of consecutive naturals, for example, 18346 + ... + 37551.

It is an arithmetic number, because the mean of its divisors is an integer number (35607026).

Almost surely, 2^536778891 is an apocalyptic number.

536778891 is a deficient number, since it is larger than the sum of its proper divisors (317789733).

536778891 is a wasteful number, since it uses less digits than its factorization.

536778891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56011 (or 56008 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 536778891 is about 23168.4891825082. The cubic root of 536778891 is about 812.7029002066.

The spelling of 536778891 in words is "five hundred thirty-six million, seven hundred seventy-eight thousand, eight hundred ninety-one".