1274794645 has 16 divisors (see below), whose sum is σ = 1613845440. Its totient is φ = 964013184.

The previous prime is 1274794643. The next prime is 1274794669. The reversal of 1274794645 is 5464974721.

It is a happy number.

It is not a de Polignac number, because 1274794645 - 2¹ = 1274794643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274794643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28734 + ... + 58096.

It is an arithmetic number, because the mean of its divisors is an integer number (100865340).

Almost surely, 2^1274794645 is an apocalyptic number.

It is an amenable number.

1274794645 is a deficient number, since it is larger than the sum of its proper divisors (339050795).

1274794645 is a wasteful number, since it uses less digits than its factorization.

1274794645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29844.

The product of its digits is 1693440, while the sum is 49.

The square root of 1274794645 is about 35704.2664817526. The cubic root of 1274794645 is about 1084.2932232927.

The spelling of 1274794645 in words is "one billion, two hundred seventy-four million, seven hundred ninety-four thousand, six hundred forty-five".