154189421437 has 2 divisors, whose sum is σ = 154189421438. Its totient is φ = 154189421436.

The previous prime is 154189421417. The next prime is 154189421443. The reversal of 154189421437 is 734124981451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131997062596 + 22192358841 = 363314^2 + 148971^2 .

It is a cyclic number.

It is not a de Polignac number, because 154189421437 - 2³⁵ = 119829683069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154189421417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77094710718 + 77094710719.

It is an arithmetic number, because the mean of its divisors is an integer number (77094710719).

Almost surely, 2^154189421437 is an apocalyptic number.

It is an amenable number.

154189421437 is a deficient number, since it is larger than the sum of its proper divisors (1).

154189421437 is an equidigital number, since it uses as much as digits as its factorization.

154189421437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The spelling of 154189421437 in words is "one hundred fifty-four billion, one hundred eighty-nine million, four hundred twenty-one thousand, four hundred thirty-seven".