1897948934 has 16 divisors (see below), whose sum is σ = 3308774400. Its totient is φ = 799619784.

The previous prime is 1897948907. The next prime is 1897948939. The reversal of 1897948934 is 4398497981.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897948939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148054 + ... + 1149705.

It is an arithmetic number, because the mean of its divisors is an integer number (206798400).

Almost surely, 2^1897948934 is an apocalyptic number.

1897948934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1897948934 is a deficient number, since it is larger than the sum of its proper divisors (1410825466).

1897948934 is a wasteful number, since it uses less digits than its factorization.

1897948934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297827.

The product of its digits is 15676416, while the sum is 62.

The square root of 1897948934 is about 43565.4557419063. The cubic root of 1897948934 is about 1238.1164896741.

The spelling of 1897948934 in words is "one billion, eight hundred ninety-seven million, nine hundred forty-eight thousand, nine hundred thirty-four".