1155890002 has 8 divisors (see below), whose sum is σ = 1733986800. Its totient is φ = 577894404.

The previous prime is 1155889979. The next prime is 1155890003. The reversal of 1155890002 is 2000985511.

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

It is not an unprimeable number, because it can be changed into a prime (1155890003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18249 + ... + 51427.

It is an arithmetic number, because the mean of its divisors is an integer number (216748350).

Almost surely, 2^1155890002 is an apocalyptic number.

1155890002 is a deficient number, since it is larger than the sum of its proper divisors (578096798).

1155890002 is a wasteful number, since it uses less digits than its factorization.

1155890002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50600.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 1155890002 is about 33998.3823438704. The cubic root of 1155890002 is about 1049.4751729396.

The spelling of 1155890002 in words is "one billion, one hundred fifty-five million, eight hundred ninety thousand, two".