1372747049 has 2 divisors, whose sum is σ = 1372747050. Its totient is φ = 1372747048.

The previous prime is 1372747009. The next prime is 1372747073. The reversal of 1372747049 is 9407472731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772840000 + 599907049 = 27800^2 + 24493^2 .

It is an emirp because it is prime and its reverse (9407472731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1372747049 - 2¹² = 1372742953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372747009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686373524 + 686373525.

It is an arithmetic number, because the mean of its divisors is an integer number (686373525).

Almost surely, 2^1372747049 is an apocalyptic number.

It is an amenable number.

1372747049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372747049 is an equidigital number, since it uses as much as digits as its factorization.

1372747049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 1372747049 is about 37050.6011962019. The cubic root of 1372747049 is about 1111.3823777383.

The spelling of 1372747049 in words is "one billion, three hundred seventy-two million, seven hundred forty-seven thousand, forty-nine".