1165378028 has 6 divisors (see below), whose sum is σ = 2039411556. Its totient is φ = 582689012.

The previous prime is 1165378013. The next prime is 1165378031. The reversal of 1165378028 is 8208735611.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145672250 + ... + 145672257.

It is an arithmetic number, because the mean of its divisors is an integer number (339901926).

Almost surely, 2^1165378028 is an apocalyptic number.

It is an amenable number.

1165378028 is a deficient number, since it is larger than the sum of its proper divisors (874033528).

1165378028 is a wasteful number, since it uses less digits than its factorization.

1165378028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291344511 (or 291344509 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1165378028 is about 34137.6336028144. The cubic root of 1165378028 is about 1052.3388613297.

The spelling of 1165378028 in words is "one billion, one hundred sixty-five million, three hundred seventy-eight thousand, twenty-eight".