1121790903 has 4 divisors (see below), whose sum is σ = 1495721208. Its totient is φ = 747860600.

The previous prime is 1121790881. The next prime is 1121790907. The reversal of 1121790903 is 3090971211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121790903 - 2⁹ = 1121790391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121790907) 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, 186965148 + ... + 186965153.

It is an arithmetic number, because the mean of its divisors is an integer number (373930302).

Almost surely, 2^1121790903 is an apocalyptic number.

1121790903 is a deficient number, since it is larger than the sum of its proper divisors (373930305).

1121790903 is an equidigital number, since it uses as much as digits as its factorization.

1121790903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373930304.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 1121790903 is about 33493.1471050422. The cubic root of 1121790903 is about 1039.0520525784.

The spelling of 1121790903 in words is "one billion, one hundred twenty-one million, seven hundred ninety thousand, nine hundred three".