1155415740 has 48 divisors (see below), whose sum is σ = 3237760512. Its totient is φ = 307863616.

The previous prime is 1155415721. The next prime is 1155415747. The reversal of 1155415740 is 475145511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155415747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74977 + ... + 89063.

It is an arithmetic number, because the mean of its divisors is an integer number (67453344).

Almost surely, 2^1155415740 is an apocalyptic number.

1155415740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155415740 is an abundant number, since it is smaller than the sum of its proper divisors (2082344772).

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

1155415740 is a wasteful number, since it uses less digits than its factorization.

1155415740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466 (or 15464 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 1155415740 is about 33991.4068552627. The cubic root of 1155415740 is about 1049.3316199828.

The spelling of 1155415740 in words is "one billion, one hundred fifty-five million, four hundred fifteen thousand, seven hundred forty".