19069124281 has 9 divisors (see below), whose sum is σ = 20259314671. Its totient is φ = 17945201632.

The previous prime is 19069124279. The next prime is 19069124339. The reversal of 19069124281 is 18242196091.

The square root of 19069124281 is 138091.

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., 14846204025 + 4222920256 = 121845^2 + 64984^2 .

It is not a de Polignac number, because 19069124281 - 2¹ = 19069124279 is a prime.

It is a super-2 number, since 2×19069124281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19069124381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2343486 + ... + 2351608.

Almost surely, 2^19069124281 is an apocalyptic number.

19069124281 is the 138091-st square number.

19069124281 is the 69046-th centered octagonal number.

It is an amenable number.

19069124281 is a deficient number, since it is larger than the sum of its proper divisors (1190190390).

19069124281 is an frugal number, since it uses more digits than its factorization.

19069124281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16280 (or 8140 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 19069124281 in words is "nineteen billion, sixty-nine million, one hundred twenty-four thousand, two hundred eighty-one".