1155490870 has 8 divisors (see below), whose sum is σ = 2079883584. Its totient is φ = 462196344.

The previous prime is 1155490841. The next prime is 1155490907. The reversal of 1155490870 is 780945511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57774534 + ... + 57774553.

It is an arithmetic number, because the mean of its divisors is an integer number (259985448).

Almost surely, 2^1155490870 is an apocalyptic number.

1155490870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155490870 is a deficient number, since it is larger than the sum of its proper divisors (924392714).

1155490870 is a wasteful number, since it uses less digits than its factorization.

1155490870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115549094.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1155490870 is about 33992.5119695500. The cubic root of 1155490870 is about 1049.3543634777.

The spelling of 1155490870 in words is "one billion, one hundred fifty-five million, four hundred ninety thousand, eight hundred seventy".