964571940 has 36 divisors (see below), whose sum is σ = 2925868764. Its totient is φ = 257219136.

The previous prime is 964571903. The next prime is 964571947. The reversal of 964571940 is 49175469.

964571940 is a `hidden beast` number, since 9 + 6 + 457 + 194 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 453178944 + 511392996 = 21288^2 + 22614^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (964571947) 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, 2679187 + ... + 2679546.

Almost surely, 2^964571940 is an apocalyptic number.

964571940 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

964571940 is an abundant number, since it is smaller than the sum of its proper divisors (1961296824).

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

964571940 is a wasteful number, since it uses less digits than its factorization.

964571940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358748 (or 5358743 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 964571940 is about 31057.5585003071. The cubic root of 964571940 is about 988.0483743737.

The spelling of 964571940 in words is "nine hundred sixty-four million, five hundred seventy-one thousand, nine hundred forty".