1149890155 has 8 divisors (see below), whose sum is σ = 1380183552. Its totient is φ = 919701888.

The previous prime is 1149890153. The next prime is 1149890171. The reversal of 1149890155 is 5510989411.

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

It is a cyclic number.

It is not a de Polignac number, because 1149890155 - 2¹ = 1149890153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149890153) 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, 214 + ... + 47956.

It is an arithmetic number, because the mean of its divisors is an integer number (172522944).

Almost surely, 2^1149890155 is an apocalyptic number.

1149890155 is a deficient number, since it is larger than the sum of its proper divisors (230293397).

1149890155 is an equidigital number, since it uses as much as digits as its factorization.

1149890155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52565.

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

The square root of 1149890155 is about 33910.0303007827. The cubic root of 1149890155 is about 1047.6561945852.

The spelling of 1149890155 in words is "one billion, one hundred forty-nine million, eight hundred ninety thousand, one hundred fifty-five".