1121837613 has 32 divisors (see below), whose sum is σ = 1668885120. Its totient is φ = 665871360.

The previous prime is 1121837611. The next prime is 1121837663. The reversal of 1121837613 is 3167381211.

1121837613 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1121837613 - 2¹ = 1121837611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121837611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138370 + ... + 146252.

It is an arithmetic number, because the mean of its divisors is an integer number (52152660).

Almost surely, 2^1121837613 is an apocalyptic number.

1121837613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1121837613 is a deficient number, since it is larger than the sum of its proper divisors (547047507).

1121837613 is a wasteful number, since it uses less digits than its factorization.

1121837613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8029.

The product of its digits is 6048, while the sum is 33.

The square root of 1121837613 is about 33493.8444046066. The cubic root of 1121837613 is about 1039.0664739967.

The spelling of 1121837613 in words is "one billion, one hundred twenty-one million, eight hundred thirty-seven thousand, six hundred thirteen".