1121895154 has 4 divisors (see below), whose sum is σ = 1682842734. Its totient is φ = 560947576.

The previous prime is 1121895097. The next prime is 1121895157. The reversal of 1121895154 is 4515981211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 825125625 + 296769529 = 28725^2 + 17227^2 .

It is not an unprimeable number, because it can be changed into a prime (1121895157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280473787 + ... + 280473790.

Almost surely, 2^1121895154 is an apocalyptic number.

1121895154 is a deficient number, since it is larger than the sum of its proper divisors (560947580).

1121895154 is an equidigital number, since it uses as much as digits as its factorization.

1121895154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560947579.

The product of its digits is 14400, while the sum is 37.

The square root of 1121895154 is about 33494.7033723244. The cubic root of 1121895154 is about 1039.0842388679.

The spelling of 1121895154 in words is "one billion, one hundred twenty-one million, eight hundred ninety-five thousand, one hundred fifty-four".