1964991306 has 16 divisors (see below), whose sum is σ = 3974140800. Its totient is φ = 647637408.

The previous prime is 1964991299. The next prime is 1964991307. The reversal of 1964991306 is 6031994691.

It is a super-2 number, since 2×1964991306² = 7722381665311171272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1964991307) 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 7 ways as a sum of consecutive naturals, for example, 1839346 + ... + 1840413.

It is an arithmetic number, because the mean of its divisors is an integer number (248383800).

Almost surely, 2^1964991306 is an apocalyptic number.

1964991306 is an abundant number, since it is smaller than the sum of its proper divisors (2009149494).

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

1964991306 is a wasteful number, since it uses less digits than its factorization.

1964991306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679853.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 1964991306 is about 44328.2224547748. Note that the first 3 decimals coincide. The cubic root of 1964991306 is about 1252.5263691406.

The spelling of 1964991306 in words is "one billion, nine hundred sixty-four million, nine hundred ninety-one thousand, three hundred six".