1964800690 has 32 divisors (see below), whose sum is σ = 3620090880. Its totient is φ = 767452224.

The previous prime is 1964800681. The next prime is 1964800699. The reversal of 1964800690 is 960084691.

It is an interprime number because it is at equal distance from previous prime (1964800681) and next prime (1964800699).

It is a super-2 number, since 2×1964800690² = 7720883502848952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1964800699) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 213096 + ... + 222124.

It is an arithmetic number, because the mean of its divisors is an integer number (113127840).

Almost surely, 2^1964800690 is an apocalyptic number.

1964800690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1964800690 is a deficient number, since it is larger than the sum of its proper divisors (1655290190).

1964800690 is a wasteful number, since it uses less digits than its factorization.

1964800690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1964800690 is about 44326.0723502545. The cubic root of 1964800690 is about 1252.4858669619.

The spelling of 1964800690 in words is "one billion, nine hundred sixty-four million, eight hundred thousand, six hundred ninety".