1245090965 has 16 divisors (see below), whose sum is σ = 1585986480. Its totient is φ = 935116800.

The previous prime is 1245090961. The next prime is 1245090989. The reversal of 1245090965 is 5690905421.

It can be written as a sum of positive squares in 8 ways, for example, as 349465636 + 895625329 = 18694^2 + 29927^2 .

It is not a de Polignac number, because 1245090965 - 2² = 1245090961 is a prime.

It is a super-2 number, since 2×1245090965² = 3100503022249262450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245090961) 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, 15821 + ... + 52349.

It is an arithmetic number, because the mean of its divisors is an integer number (99124155).

Almost surely, 2^1245090965 is an apocalyptic number.

It is an amenable number.

1245090965 is a deficient number, since it is larger than the sum of its proper divisors (340895515).

1245090965 is a wasteful number, since it uses less digits than its factorization.

1245090965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36952.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1245090965 is about 35285.8465252004. The cubic root of 1245090965 is about 1075.8053355988.

The spelling of 1245090965 in words is "one billion, two hundred forty-five million, ninety thousand, nine hundred sixty-five".