1318236941025 has 27 divisors (see below), whose sum is σ = 2361139679379. Its totient is φ = 703050516720.

The previous prime is 1318236940987. The next prime is 1318236941057. The reversal of 1318236941025 is 5201496328131.

The square root of 1318236941025 is 1148145.

It is a perfect power (a square), and thus also a powerful number.

1318236941025 is a `hidden beast` number, since 1 + 3 + 182 + 36 + 9 + 410 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 474565298769 + 843671642256 = 688887^2 + 918516^2 .

It is not a de Polignac number, because 1318236941025 - 2²¹ = 1318234843873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17183904 + ... + 17260446.

Almost surely, 2^{1318236941025} is an apocalyptic number.

1318236941025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1318236941025 is the 1148145-th square number.

1318236941025 is the 574073-rd centered octagonal number.

It is an amenable number.

1318236941025 is a deficient number, since it is larger than the sum of its proper divisors (1042902738354).

1318236941025 is an frugal number, since it uses more digits than its factorization.

1318236941025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153102 (or 76551 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 1318236941025 in words is "one trillion, three hundred eighteen billion, two hundred thirty-six million, nine hundred forty-one thousand, twenty-five".