261118948 has 24 divisors (see below), whose sum is σ = 462508704. Its totient is φ = 128980800.

The previous prime is 261118933. The next prime is 261118961. The reversal of 261118948 is 849811162.

It is a self number, because there is not a number n which added to its sum of digits gives 261118948.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222403 + ... + 223573.

It is an arithmetic number, because the mean of its divisors is an integer number (19271196).

Almost surely, 2^261118948 is an apocalyptic number.

It is an amenable number.

261118948 is a deficient number, since it is larger than the sum of its proper divisors (201389756).

261118948 is a wasteful number, since it uses less digits than its factorization.

261118948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803 (or 1801 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 261118948 is about 16159.1753502461. The cubic root of 261118948 is about 639.1647208786.

The spelling of 261118948 in words is "two hundred sixty-one million, one hundred eighteen thousand, nine hundred forty-eight".