3172644157 has 2 divisors, whose sum is σ = 3172644158. Its totient is φ = 3172644156.

The previous prime is 3172644133. The next prime is 3172644197. The reversal of 3172644157 is 7514462713.

It is an a-pointer prime, because the next prime (3172644197) can be obtained adding 3172644157 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3081804196 + 90839961 = 55514^2 + 9531^2 .

It is a cyclic number.

It is not a de Polignac number, because 3172644157 - 2³¹ = 1025160509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3172644107) 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, 1586322078 + 1586322079.

It is an arithmetic number, because the mean of its divisors is an integer number (1586322079).

Almost surely, 2^3172644157 is an apocalyptic number.

It is an amenable number.

3172644157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3172644157 is an equidigital number, since it uses as much as digits as its factorization.

3172644157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 3172644157 is about 56326.2297424566. The cubic root of 3172644157 is about 1469.4014187165.

The spelling of 3172644157 in words is "three billion, one hundred seventy-two million, six hundred forty-four thousand, one hundred fifty-seven".