16198531 has 2 divisors, whose sum is σ = 16198532. Its totient is φ = 16198530.

The previous prime is 16198517. The next prime is 16198541. The reversal of 16198531 is 13589161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16198531 - 2¹⁵ = 16165763 is a prime.

It is a super-2 number, since 2×16198531² = 524784813115922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16198541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8099265 + 8099266.

It is an arithmetic number, because the mean of its divisors is an integer number (8099266).

Almost surely, 2^16198531 is an apocalyptic number.

16198531 is a deficient number, since it is larger than the sum of its proper divisors (1).

16198531 is an equidigital number, since it uses as much as digits as its factorization.

16198531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 16198531 is about 4024.7398673703. The cubic root of 16198531 is about 253.0221511952.

The spelling of 16198531 in words is "sixteen million, one hundred ninety-eight thousand, five hundred thirty-one".