3736147421 has 2 divisors, whose sum is σ = 3736147422. Its totient is φ = 3736147420.

The previous prime is 3736147367. The next prime is 3736147451. The reversal of 3736147421 is 1247416373.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1999341796 + 1736805625 = 44714^2 + 41675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3736147421 - 2¹⁸ = 3735885277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3736147451) 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, 1868073710 + 1868073711.

It is an arithmetic number, because the mean of its divisors is an integer number (1868073711).

Almost surely, 2^3736147421 is an apocalyptic number.

It is an amenable number.

3736147421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3736147421 is an equidigital number, since it uses as much as digits as its factorization.

3736147421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 3736147421 is about 61124.0330884669. The cubic root of 3736147421 is about 1551.7008621499.

The spelling of 3736147421 in words is "three billion, seven hundred thirty-six million, one hundred forty-seven thousand, four hundred twenty-one".