246149981 has 12 divisors (see below), whose sum is σ = 312369120. Its totient is φ = 191804760.

The previous prime is 246149977. The next prime is 246149983. The reversal of 246149981 is 189941642.

It is not a de Polignac number, because 246149981 - 2² = 246149977 is a prime.

It is a super-2 number, since 2×246149981² = 121179626292600722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (246149983) 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 11 ways as a sum of consecutive naturals, for example, 227801 + ... + 228878.

It is an arithmetic number, because the mean of its divisors is an integer number (26030760).

Almost surely, 2^246149981 is an apocalyptic number.

It is an amenable number.

246149981 is a deficient number, since it is larger than the sum of its proper divisors (66219139).

246149981 is a wasteful number, since it uses less digits than its factorization.

246149981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456704 (or 456697 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 246149981 is about 15689.1676324781. The cubic root of 246149981 is about 626.7099678029.

The spelling of 246149981 in words is "two hundred forty-six million, one hundred forty-nine thousand, nine hundred eighty-one".