1263157906149 has 24 divisors (see below), whose sum is σ = 1903938970752. Its totient is φ = 805471355040.

The previous prime is 1263157906117. The next prime is 1263157906181. The reversal of 1263157906149 is 9416097513621.

1263157906149 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 1 + 579 + 0 + 61 + 4 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1263157906117) and next prime (1263157906181).

It is not a de Polignac number, because 1263157906149 - 2⁵ = 1263157906117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263157906095 and 1263157906104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263157906949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15425584 + ... + 15507254.

It is an arithmetic number, because the mean of its divisors is an integer number (79330790448).

Almost surely, 2^{1263157906149} is an apocalyptic number.

It is an amenable number.

1263157906149 is a deficient number, since it is larger than the sum of its proper divisors (640781064603).

1263157906149 is a wasteful number, since it uses less digits than its factorization.

1263157906149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156417 (or 156414 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 1263157906149 in words is "one trillion, two hundred sixty-three billion, one hundred fifty-seven million, nine hundred six thousand, one hundred forty-nine".