1145212637 has 2 divisors, whose sum is σ = 1145212638. Its totient is φ = 1145212636.

The previous prime is 1145212613. The next prime is 1145212703. The reversal of 1145212637 is 7362125411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942121636 + 203091001 = 30694^2 + 14251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145212637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145215637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572606318 + 572606319.

It is an arithmetic number, because the mean of its divisors is an integer number (572606319).

Almost surely, 2^1145212637 is an apocalyptic number.

It is an amenable number.

1145212637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145212637 is an equidigital number, since it uses as much as digits as its factorization.

1145212637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 1145212637 is about 33840.9904849134. The cubic root of 1145212637 is about 1046.2337136657.

The spelling of 1145212637 in words is "one billion, one hundred forty-five million, two hundred twelve thousand, six hundred thirty-seven".