1345165390 has 16 divisors (see below), whose sum is σ = 2451948480. Its totient is φ = 531254880.

The previous prime is 1345165357. The next prime is 1345165391. The reversal of 1345165390 is 935615431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345165391) 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, 850581 + ... + 852160.

It is an arithmetic number, because the mean of its divisors is an integer number (153246780).

Almost surely, 2^1345165390 is an apocalyptic number.

1345165390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1345165390 is a deficient number, since it is larger than the sum of its proper divisors (1106783090).

1345165390 is a wasteful number, since it uses less digits than its factorization.

1345165390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702827.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 1345165390 is about 36676.4964248223. The cubic root of 1345165390 is about 1103.8885489037. Note that the first 3 decimals are identical.

The spelling of 1345165390 in words is "one billion, three hundred forty-five million, one hundred sixty-five thousand, three hundred ninety".