1023102149 has 2 divisors, whose sum is σ = 1023102150. Its totient is φ = 1023102148.

The previous prime is 1023102131. The next prime is 1023102181. The reversal of 1023102149 is 9412013201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736036900 + 287065249 = 27130^2 + 16943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023102149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023107149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511551074 + 511551075.

It is an arithmetic number, because the mean of its divisors is an integer number (511551075).

Almost surely, 2^1023102149 is an apocalyptic number.

It is an amenable number.

1023102149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023102149 is an equidigital number, since it uses as much as digits as its factorization.

1023102149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1023102149 is about 31985.9680016097. The cubic root of 1023102149 is about 1007.6421648750.

The spelling of 1023102149 in words is "one billion, twenty-three million, one hundred two thousand, one hundred forty-nine".