1918034897 has 4 divisors (see below), whose sum is σ = 1969873716. Its totient is φ = 1866196080.

The previous prime is 1918034879. The next prime is 1918034927. The reversal of 1918034897 is 7984308191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1840753216 + 77281681 = 42904^2 + 8791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1918034897 - 2¹⁴ = 1918018513 is a prime.

It is a super-3 number, since 3×1918034897³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1918034297) 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, 25919354 + ... + 25919427.

It is an arithmetic number, because the mean of its divisors is an integer number (492468429).

Almost surely, 2^1918034897 is an apocalyptic number.

It is an amenable number.

1918034897 is a deficient number, since it is larger than the sum of its proper divisors (51838819).

1918034897 is an equidigital number, since it uses as much as digits as its factorization.

1918034897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51838818.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1918034897 is about 43795.3752923753. The cubic root of 1918034897 is about 1242.4688276412.

The spelling of 1918034897 in words is "one billion, nine hundred eighteen million, thirty-four thousand, eight hundred ninety-seven".