538091851 has 16 divisors (see below), whose sum is σ = 606647808. Its totient is φ = 472975200.

The previous prime is 538091849. The next prime is 538091857. The reversal of 538091851 is 158190835.

It is a cyclic number.

It is not a de Polignac number, because 538091851 - 2¹ = 538091849 is a prime.

It is a super-2 number, since 2×538091851² = 579085680225212402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538091857) 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, 62286 + ... + 70396.

It is an arithmetic number, because the mean of its divisors is an integer number (37915488).

Almost surely, 2^538091851 is an apocalyptic number.

538091851 is a deficient number, since it is larger than the sum of its proper divisors (68555957).

538091851 is a wasteful number, since it uses less digits than its factorization.

538091851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8322.

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 538091851 is about 23196.8069138836. The cubic root of 538091851 is about 813.3649838567.

The spelling of 538091851 in words is "five hundred thirty-eight million, ninety-one thousand, eight hundred fifty-one".