1964185071 has 12 divisors (see below), whose sum is σ = 2691613512. Its totient is φ = 1274063328.

The previous prime is 1964185061. The next prime is 1964185099. The reversal of 1964185071 is 1705814691.

It is not a de Polignac number, because 1964185071 - 2⁵ = 1964185039 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964185001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235020 + ... + 243233.

It is an arithmetic number, because the mean of its divisors is an integer number (224301126).

Almost surely, 2^1964185071 is an apocalyptic number.

1964185071 is a deficient number, since it is larger than the sum of its proper divisors (727428441).

1964185071 is an equidigital number, since it uses as much as digits as its factorization.

1964185071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478330 (or 478293 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 1964185071 is about 44319.1275974607. The cubic root of 1964185071 is about 1252.3550420484.

The spelling of 1964185071 in words is "one billion, nine hundred sixty-four million, one hundred eighty-five thousand, seventy-one".