1429198731081 has 81 divisors (see below), whose sum is σ = 2411593554279. Its totient is φ = 814846665600.

The previous prime is 1429198731071. The next prime is 1429198731119. The reversal of 1429198731081 is 1801378919241.

The square root of 1429198731081 is 1195491.

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

It can be written as a sum of positive squares in only one way, i.e., 1112697974025 + 316500757056 = 1054845^2 + 562584^2 .

It is not a de Polignac number, because 1429198731081 - 2⁹ = 1429198730569 is a prime.

It is a super-2 number, since 2×1429198731081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1429198731041) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 670669386 + ... + 670671516.

Almost surely, 2^{1429198731081} is an apocalyptic number.

1429198731081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1429198731081 is the 1195491-st square number.

1429198731081 is the 597746-th centered octagonal number.

It is an amenable number.

1429198731081 is a deficient number, since it is larger than the sum of its proper divisors (982394823198).

1429198731081 is an equidigital number, since it uses as much as digits as its factorization.

1429198731081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The spelling of 1429198731081 in words is "one trillion, four hundred twenty-nine billion, one hundred ninety-eight million, seven hundred thirty-one thousand, eighty-one".