1121519993 has 4 divisors (see below), whose sum is σ = 1223476368. Its totient is φ = 1019563620.

The previous prime is 1121519989. The next prime is 1121520007. The reversal of 1121519993 is 3999151211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121519993 - 2² = 1121519989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121519993.

It is not an unprimeable number, because it can be changed into a prime (1121519963) 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, 50978171 + ... + 50978192.

It is an arithmetic number, because the mean of its divisors is an integer number (305869092).

Almost surely, 2^1121519993 is an apocalyptic number.

It is an amenable number.

1121519993 is a deficient number, since it is larger than the sum of its proper divisors (101956375).

1121519993 is a wasteful number, since it uses less digits than its factorization.

1121519993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101956374.

The product of its digits is 21870, while the sum is 41.

The square root of 1121519993 is about 33489.1026006968. The cubic root of 1121519993 is about 1038.9684029269.

The spelling of 1121519993 in words is "one billion, one hundred twenty-one million, five hundred nineteen thousand, nine hundred ninety-three".