1426931645 has 4 divisors (see below), whose sum is σ = 1712317980. Its totient is φ = 1141545312.

The previous prime is 1426931641. The next prime is 1426931663. The reversal of 1426931645 is 5461396241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259274404 + 1167657241 = 16102^2 + 34171^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426931645 - 2² = 1426931641 is a prime.

It is a super-2 number, since 2×1426931645² = 4072267839004812050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426931641) 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 3 ways as a sum of consecutive naturals, for example, 142693160 + ... + 142693169.

It is an arithmetic number, because the mean of its divisors is an integer number (428079495).

Almost surely, 2^1426931645 is an apocalyptic number.

It is an amenable number.

1426931645 is a deficient number, since it is larger than the sum of its proper divisors (285386335).

1426931645 is an equidigital number, since it uses as much as digits as its factorization.

1426931645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285386334.

The product of its digits is 155520, while the sum is 41.

The square root of 1426931645 is about 37774.7487748099. The cubic root of 1426931645 is about 1125.8167948144.

The spelling of 1426931645 in words is "one billion, four hundred twenty-six million, nine hundred thirty-one thousand, six hundred forty-five".