1121960389 has 16 divisors (see below), whose sum is σ = 1252278144. Its totient is φ = 996620800.

The previous prime is 1121960387. The next prime is 1121960467. The reversal of 1121960389 is 9830691211.

It is a cyclic number.

It is not a de Polignac number, because 1121960389 - 2¹ = 1121960387 is a prime.

It is a super-2 number, since 2×1121960389² = 2517590228970062642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121960383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81897 + ... + 94609.

It is an arithmetic number, because the mean of its divisors is an integer number (78267384).

Almost surely, 2^1121960389 is an apocalyptic number.

It is an amenable number.

1121960389 is a deficient number, since it is larger than the sum of its proper divisors (130317755).

1121960389 is a wasteful number, since it uses less digits than its factorization.

1121960389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12908.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1121960389 is about 33495.6771688527. The cubic root of 1121960389 is about 1039.1043784047.

The spelling of 1121960389 in words is "one billion, one hundred twenty-one million, nine hundred sixty thousand, three hundred eighty-nine".