1165378434 has 16 divisors (see below), whose sum is σ = 2542644000. Its totient is φ = 353144960.

The previous prime is 1165378429. The next prime is 1165378439. The reversal of 1165378434 is 4348735611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1165378429) and next prime (1165378439).

It is not an unprimeable number, because it can be changed into a prime (1165378439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8828559 + ... + 8828690.

It is an arithmetic number, because the mean of its divisors is an integer number (158915250).

Almost surely, 2^1165378434 is an apocalyptic number.

1165378434 is an abundant number, since it is smaller than the sum of its proper divisors (1377265566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165378434 is a wasteful number, since it uses less digits than its factorization.

1165378434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17657265.

The product of its digits is 241920, while the sum is 42.

The square root of 1165378434 is about 34137.6395493303. The cubic root of 1165378434 is about 1052.3389835360.

The spelling of 1165378434 in words is "one billion, one hundred sixty-five million, three hundred seventy-eight thousand, four hundred thirty-four".