1151421279849 has 15 divisors (see below), whose sum is σ = 1720038807597. Its totient is φ = 767607748308.

The previous prime is 1151421279797. The next prime is 1151421279919. The reversal of 1151421279849 is 9489721241511.

The square root of 1151421279849 is 1073043.

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

1151421279849 is a `hidden beast` number, since 1 + 1 + 514 + 2 + 12 + 79 + 8 + 49 = 666.

It is not a de Polignac number, because 1151421279849 - 2¹³ = 1151421271657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1151421279795 and 1151421279804.

It is not an unprimeable number, because it can be changed into a prime (1151421279049) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9597774 + ... + 9717000.

Almost surely, 2^{1151421279849} is an apocalyptic number.

1151421279849 is the 1073043-rd square number.

1151421279849 is the 536522-nd centered octagonal number.

It is an amenable number.

1151421279849 is a deficient number, since it is larger than the sum of its proper divisors (568617527748).

1151421279849 is an frugal number, since it uses more digits than its factorization.

1151421279849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238466 (or 119230 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 1151421279849 in words is "one trillion, one hundred fifty-one billion, four hundred twenty-one million, two hundred seventy-nine thousand, eight hundred forty-nine".