1964397015 has 160 divisors (see below), whose sum is σ = 4181760000. Its totient is φ = 881689536.

The previous prime is 1964396999. The next prime is 1964397047. The reversal of 1964397015 is 5107934691.

It is not a de Polignac number, because 1964397015 - 2⁴ = 1964396999 is a prime.

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

Together with 2217362985 it forms an amicable pair .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 10974196 + ... + 10974374.

It is an arithmetic number, because the mean of its divisors is an integer number (26136000).

Almost surely, 2^1964397015 is an apocalyptic number.

1964397015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1964397015 is an abundant number, since it is smaller than the sum of its proper divisors (2217362985).

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

1964397015 is an equidigital number, since it uses as much as digits as its factorization.

1964397015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1964397015 is about 44321.5186450103. The cubic root of 1964397015 is about 1252.4000852565.

The spelling of 1964397015 in words is "one billion, nine hundred sixty-four million, three hundred ninety-seven thousand, fifteen".