1180257140 has 24 divisors (see below), whose sum is σ = 2513452032. Its totient is φ = 465452960.

The previous prime is 1180257139. The next prime is 1180257149. The reversal of 1180257140 is 417520811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180257149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414164 + ... + 417003.

It is an arithmetic number, because the mean of its divisors is an integer number (104727168).

Almost surely, 2^1180257140 is an apocalyptic number.

1180257140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1180257140 is an abundant number, since it is smaller than the sum of its proper divisors (1333194892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1180257140 is a wasteful number, since it uses less digits than its factorization.

1180257140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831247 (or 831245 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1180257140 is about 34354.8706881572. The cubic root of 1180257140 is about 1056.7985582841.

Adding to 1180257140 its reverse (417520811), we get a palindrome (1597777951).

The spelling of 1180257140 in words is "one billion, one hundred eighty million, two hundred fifty-seven thousand, one hundred forty".