1246849631 has 2 divisors, whose sum is σ = 1246849632. Its totient is φ = 1246849630.

The previous prime is 1246849627. The next prime is 1246849651. The reversal of 1246849631 is 1369486421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1369486421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1246849631 - 2² = 1246849627 is a prime.

It is a super-2 number, since 2×1246849631² = 3109268004649672322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1246849601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623424815 + 623424816.

It is an arithmetic number, because the mean of its divisors is an integer number (623424816).

Almost surely, 2^1246849631 is an apocalyptic number.

1246849631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246849631 is an equidigital number, since it uses as much as digits as its factorization.

1246849631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 1246849631 is about 35310.7580065906. The cubic root of 1246849631 is about 1076.3116151190.

The spelling of 1246849631 in words is "one billion, two hundred forty-six million, eight hundred forty-nine thousand, six hundred thirty-one".