201834356969 has 4 divisors (see below), whose sum is σ = 230667836544. Its totient is φ = 173000877396.

The previous prime is 201834356947. The next prime is 201834356981. The reversal of 201834356969 is 969653438102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201834356969 is a prime.

It is a super-2 number, since 2×201834356969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201834356939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14416739777 + ... + 14416739790.

It is an arithmetic number, because the mean of its divisors is an integer number (57666959136).

Almost surely, 2^201834356969 is an apocalyptic number.

It is an amenable number.

201834356969 is a deficient number, since it is larger than the sum of its proper divisors (28833479575).

201834356969 is an equidigital number, since it uses as much as digits as its factorization.

201834356969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28833479574.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 201834356969 in words is "two hundred one billion, eight hundred thirty-four million, three hundred fifty-six thousand, nine hundred sixty-nine".