1816269297 has 16 divisors (see below), whose sum is σ = 2437763328. Its totient is φ = 1202826240.

The previous prime is 1816269271. The next prime is 1816269311. The reversal of 1816269297 is 7929626181.

It is not a de Polignac number, because 1816269297 - 2¹⁶ = 1816203761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1816269097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858513 + ... + 860625.

It is an arithmetic number, because the mean of its divisors is an integer number (152360208).

Almost surely, 2^1816269297 is an apocalyptic number.

It is an amenable number.

1816269297 is a deficient number, since it is larger than the sum of its proper divisors (621494031).

1816269297 is a wasteful number, since it uses less digits than its factorization.

1816269297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880.

The product of its digits is 653184, while the sum is 51.

The square root of 1816269297 is about 42617.7110718068. The cubic root of 1816269297 is about 1220.0943439090.

The spelling of 1816269297 in words is "one billion, eight hundred sixteen million, two hundred sixty-nine thousand, two hundred ninety-seven".