1937561201 has 2 divisors, whose sum is σ = 1937561202. Its totient is φ = 1937561200.

The previous prime is 1937561177. The next prime is 1937561207. The reversal of 1937561201 is 1021657391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1598080576 + 339480625 = 39976^2 + 18425^2 .

It is an emirp because it is prime and its reverse (1021657391) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1937561201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1937561207) 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 as a sum of consecutive naturals, namely, 968780600 + 968780601.

It is an arithmetic number, because the mean of its divisors is an integer number (968780601).

Almost surely, 2^1937561201 is an apocalyptic number.

It is an amenable number.

1937561201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1937561201 is an equidigital number, since it uses as much as digits as its factorization.

1937561201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 1937561201 is about 44017.7373453021. The cubic root of 1937561201 is about 1246.6708642355.

The spelling of 1937561201 in words is "one billion, nine hundred thirty-seven million, five hundred sixty-one thousand, two hundred one".