38690143 has 2 divisors, whose sum is σ = 38690144. Its totient is φ = 38690142.

The previous prime is 38690111. The next prime is 38690161. The reversal of 38690143 is 34109683.

It is a strong prime.

It is an emirp because it is prime and its reverse (34109683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38690143 - 2⁵ = 38690111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38690099 and 38690108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38690543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19345071 + 19345072.

It is an arithmetic number, because the mean of its divisors is an integer number (19345072).

Almost surely, 2^38690143 is an apocalyptic number.

38690143 is a deficient number, since it is larger than the sum of its proper divisors (1).

38690143 is an equidigital number, since it uses as much as digits as its factorization.

38690143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 38690143 is about 6220.1401109621. The cubic root of 38690143 is about 338.2206436052.

The spelling of 38690143 in words is "thirty-eight million, six hundred ninety thousand, one hundred forty-three".