7437921851 has 2 divisors, whose sum is σ = 7437921852. Its totient is φ = 7437921850.

The previous prime is 7437921749. The next prime is 7437921857. The reversal of 7437921851 is 1581297347.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7437921851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7437921796 and 7437921805.

It is not a weakly prime, because it can be changed into another prime (7437921857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3718960925 + 3718960926.

It is an arithmetic number, because the mean of its divisors is an integer number (3718960926).

Almost surely, 2^7437921851 is an apocalyptic number.

7437921851 is a deficient number, since it is larger than the sum of its proper divisors (1).

7437921851 is an equidigital number, since it uses as much as digits as its factorization.

7437921851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The square root of 7437921851 is about 86243.3872885336. The cubic root of 7437921851 is about 1952.0182348576.

The spelling of 7437921851 in words is "seven billion, four hundred thirty-seven million, nine hundred twenty-one thousand, eight hundred fifty-one".