38154643 has 2 divisors, whose sum is σ = 38154644. Its totient is φ = 38154642.

The previous prime is 38154617. The next prime is 38154671. The reversal of 38154643 is 34645183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38154643 is a prime.

It is equal to p_2327875 and since 38154643 and 2327875 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 38154599 and 38154608.

It is not a weakly prime, because it can be changed into another prime (38154043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19077321 + 19077322.

It is an arithmetic number, because the mean of its divisors is an integer number (19077322).

Almost surely, 2^38154643 is an apocalyptic number.

38154643 is a deficient number, since it is larger than the sum of its proper divisors (1).

38154643 is an equidigital number, since it uses as much as digits as its factorization.

38154643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 38154643 is about 6176.9444711767. The cubic root of 38154643 is about 336.6529812864.

The spelling of 38154643 in words is "thirty-eight million, one hundred fifty-four thousand, six hundred forty-three".