187415226413 has 2 divisors, whose sum is σ = 187415226414. Its totient is φ = 187415226412.

The previous prime is 187415226389. The next prime is 187415226433. The reversal of 187415226413 is 314622514781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119274911044 + 68140315369 = 345362^2 + 261037^2 .

It is a cyclic number.

It is not a de Polignac number, because 187415226413 - 2¹⁴ = 187415210029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187415226433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93707613206 + 93707613207.

It is an arithmetic number, because the mean of its divisors is an integer number (93707613207).

Almost surely, 2^187415226413 is an apocalyptic number.

It is an amenable number.

187415226413 is a deficient number, since it is larger than the sum of its proper divisors (1).

187415226413 is an equidigital number, since it uses as much as digits as its factorization.

187415226413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The spelling of 187415226413 in words is "one hundred eighty-seven billion, four hundred fifteen million, two hundred twenty-six thousand, four hundred thirteen".