38154197 has 2 divisors, whose sum is σ = 38154198. Its totient is φ = 38154196.

The previous prime is 38154157. The next prime is 38154241. The reversal of 38154197 is 79145183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36409156 + 1745041 = 6034^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 38154197 - 2⁶ = 38154133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38154197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38154157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19077098 + 19077099.

It is an arithmetic number, because the mean of its divisors is an integer number (19077099).

Almost surely, 2^38154197 is an apocalyptic number.

It is an amenable number.

38154197 is a deficient number, since it is larger than the sum of its proper divisors (1).

38154197 is an equidigital number, since it uses as much as digits as its factorization.

38154197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 38154197 is about 6176.9083690791. The cubic root of 38154197 is about 336.6516695386.

The spelling of 38154197 in words is "thirty-eight million, one hundred fifty-four thousand, one hundred ninety-seven".