1994567964 has 24 divisors (see below), whose sum is σ = 4706286480. Its totient is φ = 657385344.

The previous prime is 1994567963. The next prime is 1994568049. The reversal of 1994567964 is 4697654991.

1994567964 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1994567898 and 1994567907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994567963) 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, 932719 + ... + 934854.

It is an arithmetic number, because the mean of its divisors is an integer number (196095270).

Almost surely, 2^1994567964 is an apocalyptic number.

It is an amenable number.

1994567964 is an abundant number, since it is smaller than the sum of its proper divisors (2711718516).

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

1994567964 is a wasteful number, since it uses less digits than its factorization.

1994567964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867669 (or 1867667 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 60.

The square root of 1994567964 is about 44660.5862478315. The cubic root of 1994567964 is about 1258.7793595697.

The spelling of 1994567964 in words is "one billion, nine hundred ninety-four million, five hundred sixty-seven thousand, nine hundred sixty-four".