1964984994 has 96 divisors (see below), whose sum is σ = 5107415040. Its totient is φ = 554580432.

The previous prime is 1964984993. The next prime is 1964985023. The reversal of 1964984994 is 4994894691.

1964984994 is a `hidden beast` number, since 19 + 6 + 498 + 49 + 94 = 666.

It is a super-2 number, since 2×1964984994² = 7722332053290360072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1964984993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278887 + ... + 285845.

It is an arithmetic number, because the mean of its divisors is an integer number (53202240).

Almost surely, 2^1964984994 is an apocalyptic number.

1964984994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1964984994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2553707520).

1964984994 is an abundant number, since it is smaller than the sum of its proper divisors (3142430046).

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

1964984994 is an equidigital number, since it uses as much as digits as its factorization.

1964984994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 7054 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 1964984994 is about 44328.1512585400. The cubic root of 1964984994 is about 1252.5250280057.

The spelling of 1964984994 in words is "one billion, nine hundred sixty-four million, nine hundred eighty-four thousand, nine hundred ninety-four".