197394837834 has 64 divisors (see below), whose sum is σ = 421888896000. Its totient is φ = 61434616320.

The previous prime is 197394837823. The next prime is 197394837907. The reversal of 197394837834 is 438738493791.

It is a super-2 number, since 2×197394837834² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7695222 + ... + 7720830.

It is an arithmetic number, because the mean of its divisors is an integer number (6592014000).

Almost surely, 2^197394837834 is an apocalyptic number.

197394837834 is an abundant number, since it is smaller than the sum of its proper divisors (224494058166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197394837834 is a wasteful number, since it uses less digits than its factorization.

197394837834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27103.

The product of its digits is 109734912, while the sum is 66.

The spelling of 197394837834 in words is "one hundred ninety-seven billion, three hundred ninety-four million, eight hundred thirty-seven thousand, eight hundred thirty-four".