261949162 has 48 divisors (see below), whose sum is σ = 440364960. Its totient is φ = 116509536.

The previous prime is 261949157. The next prime is 261949183.

261949162 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1668388 + ... + 1668544.

It is an arithmetic number, because the mean of its divisors is an integer number (9174270).

Almost surely, 2^261949162 is an apocalyptic number.

261949162 is a deficient number, since it is larger than the sum of its proper divisors (178415798).

261949162 is a wasteful number, since it uses less digits than its factorization.

261949162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 284 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 261949162 is about 16184.8435889878. The cubic root of 261949162 is about 639.8414011304.

The spelling of 261949162 in words is "two hundred sixty-one million, nine hundred forty-nine thousand, one hundred sixty-two".