538158649 has 8 divisors (see below), whose sum is σ = 615180800. Its totient is φ = 461172096.

The previous prime is 538158587. The next prime is 538158671. The reversal of 538158649 is 946851835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 538158649 - 2⁷ = 538158521 is a prime.

It is a super-2 number, since 2×538158649² = 579229462987010402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538158149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46552 + ... + 56950.

It is an arithmetic number, because the mean of its divisors is an integer number (76897600).

Almost surely, 2^538158649 is an apocalyptic number.

It is an amenable number.

538158649 is a deficient number, since it is larger than the sum of its proper divisors (77022151).

538158649 is a wasteful number, since it uses less digits than its factorization.

538158649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17799.

The product of its digits is 1036800, while the sum is 49.

The square root of 538158649 is about 23198.2466794368. The cubic root of 538158649 is about 813.3986391432.

The spelling of 538158649 in words is "five hundred thirty-eight million, one hundred fifty-eight thousand, six hundred forty-nine".