1237943291641 has 27 divisors (see below), whose sum is σ = 1468229590191. Its totient is φ = 1040726463504.

The previous prime is 1237943291633. The next prime is 1237943291687. The reversal of 1237943291641 is 1461923497321.

The square root of 1237943291641 is 1112629.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 892429749225 + 345513542416 = 944685^2 + 587804^2 .

It is not a de Polignac number, because 1237943291641 - 2³ = 1237943291633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1237943291041) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 412783860 + ... + 412786858.

Almost surely, 2^{1237943291641} is an apocalyptic number.

1237943291641 is the 1112629-th square number.

1237943291641 is the 556315-th centered octagonal number.

It is an amenable number.

1237943291641 is a deficient number, since it is larger than the sum of its proper divisors (230286298550).

1237943291641 is an frugal number, since it uses more digits than its factorization.

1237943291641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6118 (or 3059 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The spelling of 1237943291641 in words is "one trillion, two hundred thirty-seven billion, nine hundred forty-three million, two hundred ninety-one thousand, six hundred forty-one".