1290113145 has 24 divisors (see below), whose sum is σ = 2237878656. Its totient is φ = 687542688.

The previous prime is 1290113141. The next prime is 1290113147. The reversal of 1290113145 is 5413110921.

It is a happy number.

It is not a de Polignac number, because 1290113145 - 2² = 1290113141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290113141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53962 + ... + 74108.

It is an arithmetic number, because the mean of its divisors is an integer number (93244944).

Almost surely, 2^1290113145 is an apocalyptic number.

1290113145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1290113145 is a deficient number, since it is larger than the sum of its proper divisors (947765511).

1290113145 is a wasteful number, since it uses less digits than its factorization.

1290113145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21581 (or 21578 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1290113145 is about 35918.1450662475. The cubic root of 1290113145 is about 1088.6190589314.

The spelling of 1290113145 in words is "one billion, two hundred ninety million, one hundred thirteen thousand, one hundred forty-five".