1155416440 has 32 divisors (see below), whose sum is σ = 2631016080. Its totient is φ = 456596992.

The previous prime is 1155416417. The next prime is 1155416447. The reversal of 1155416440 is 446145511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155416447) 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, 170689 + ... + 177328.

Almost surely, 2^1155416440 is an apocalyptic number.

1155416440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155416440 is an abundant number, since it is smaller than the sum of its proper divisors (1475599640).

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

1155416440 is a wasteful number, since it uses less digits than its factorization.

1155416440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348111 (or 348107 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1155416440 is about 33991.4171519812. The cubic root of 1155416440 is about 1049.3318318927.

The spelling of 1155416440 in words is "one billion, one hundred fifty-five million, four hundred sixteen thousand, four hundred forty".