3897131501 has 2 divisors, whose sum is σ = 3897131502. Its totient is φ = 3897131500.

The previous prime is 3897131473. The next prime is 3897131519. The reversal of 3897131501 is 1051317983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3897005476 + 126025 = 62426^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897131501 - 2⁶ = 3897131437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3897131531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948565750 + 1948565751.

It is an arithmetic number, because the mean of its divisors is an integer number (1948565751).

Almost surely, 2^3897131501 is an apocalyptic number.

It is an amenable number.

3897131501 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897131501 is an equidigital number, since it uses as much as digits as its factorization.

3897131501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 3897131501 is about 62427.0093869633. The cubic root of 3897131501 is about 1573.6749081177.

The spelling of 3897131501 in words is "three billion, eight hundred ninety-seven million, one hundred thirty-one thousand, five hundred one".