38197151 has 2 divisors, whose sum is σ = 38197152. Its totient is φ = 38197150.

The previous prime is 38197141. The next prime is 38197157. The reversal of 38197151 is 15179183.

It is a strong prime.

It is an emirp because it is prime and its reverse (15179183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38197151 - 2²² = 34002847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38197157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19098575 + 19098576.

It is an arithmetic number, because the mean of its divisors is an integer number (19098576).

Almost surely, 2^38197151 is an apocalyptic number.

38197151 is a deficient number, since it is larger than the sum of its proper divisors (1).

38197151 is an equidigital number, since it uses as much as digits as its factorization.

38197151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 35.

The square root of 38197151 is about 6180.3843731600. The cubic root of 38197151 is about 336.7779563238. Note that the first 3 decimals are identical.

The spelling of 38197151 in words is "thirty-eight million, one hundred ninety-seven thousand, one hundred fifty-one".