1135378839 has 16 divisors (see below), whose sum is σ = 1821159680. Its totient is φ = 614640960.

The previous prime is 1135378793. The next prime is 1135378841. The reversal of 1135378839 is 9388735311.

It is not a de Polignac number, because 1135378839 - 2²⁷ = 1001161111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135378639) 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, 1422382 + ... + 1423179.

It is an arithmetic number, because the mean of its divisors is an integer number (113822480).

Almost surely, 2^1135378839 is an apocalyptic number.

1135378839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1135378839 is a deficient number, since it is larger than the sum of its proper divisors (685780841).

1135378839 is a wasteful number, since it uses less digits than its factorization.

1135378839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845590.

The product of its digits is 544320, while the sum is 48.

The square root of 1135378839 is about 33695.3830516883. The cubic root of 1135378839 is about 1043.2304749340.

The spelling of 1135378839 in words is "one billion, one hundred thirty-five million, three hundred seventy-eight thousand, eight hundred thirty-nine".