1361640037 has 2 divisors, whose sum is σ = 1361640038. Its totient is φ = 1361640036.

The previous prime is 1361640031. The next prime is 1361640061. The reversal of 1361640037 is 7300461631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 867066916 + 494573121 = 29446^2 + 22239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361640037 - 2³ = 1361640029 is a prime.

It is a super-2 number, since 2×1361640037² = 3708127180722722738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1361639990 and 1361640008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361640031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680820018 + 680820019.

It is an arithmetic number, because the mean of its divisors is an integer number (680820019).

Almost surely, 2^1361640037 is an apocalyptic number.

It is an amenable number.

1361640037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361640037 is an equidigital number, since it uses as much as digits as its factorization.

1361640037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1361640037 is about 36900.4070031755. The cubic root of 1361640037 is about 1108.3768275744.

The spelling of 1361640037 in words is "one billion, three hundred sixty-one million, six hundred forty thousand, thirty-seven".