1155914890 has 32 divisors (see below), whose sum is σ = 2247549696. Its totient is φ = 425494080.

The previous prime is 1155914849. The next prime is 1155914957. The reversal of 1155914890 is 984195511.

It is a super-3 number, since 3×1155914890³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29599 + ... + 56461.

It is an arithmetic number, because the mean of its divisors is an integer number (70235928).

Almost surely, 2^1155914890 is an apocalyptic number.

1155914890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155914890 is a deficient number, since it is larger than the sum of its proper divisors (1091634806).

1155914890 is a wasteful number, since it uses less digits than its factorization.

1155914890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27214.

The product of its (nonzero) digits is 64800, while the sum is 43.

The square root of 1155914890 is about 33998.7483593146. The cubic root of 1155914890 is about 1049.4827051300.

The spelling of 1155914890 in words is "one billion, one hundred fifty-five million, nine hundred fourteen thousand, eight hundred ninety".