1240149188 has 6 divisors (see below), whose sum is σ = 2170261086. Its totient is φ = 620074592.

The previous prime is 1240149187. The next prime is 1240149223. The reversal of 1240149188 is 8819410421.

It can be written as a sum of positive squares in only one way, i.e., 978938944 + 261210244 = 31288^2 + 16162^2 .

It is not an unprimeable number, because it can be changed into a prime (1240149187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155018645 + ... + 155018652.

It is an arithmetic number, because the mean of its divisors is an integer number (361710181).

Almost surely, 2^1240149188 is an apocalyptic number.

It is an amenable number.

1240149188 is a deficient number, since it is larger than the sum of its proper divisors (930111898).

1240149188 is a wasteful number, since it uses less digits than its factorization.

1240149188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310037301 (or 310037299 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1240149188 is about 35215.7519868595. The cubic root of 1240149188 is about 1074.3801547985.

The spelling of 1240149188 in words is "one billion, two hundred forty million, one hundred forty-nine thousand, one hundred eighty-eight".