1964920925709 has 48 divisors (see below), whose sum is σ = 3265654309632. Its totient is φ = 1115224395264.

The previous prime is 1964920925651. The next prime is 1964920925717. The reversal of 1964920925709 is 9075290294691.

1964920925709 is a `hidden beast` number, since 1 + 9 + 6 + 492 + 0 + 92 + 57 + 0 + 9 = 666.

It is not a de Polignac number, because 1964920925709 - 2⁷ = 1964920925581 is a prime.

It is a super-2 number, since 2×1964920925709² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964920925749) 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, 7226232 + ... + 7493214.

It is an arithmetic number, because the mean of its divisors is an integer number (68034464784).

Almost surely, 2^{1964920925709} is an apocalyptic number.

It is an amenable number.

1964920925709 is a deficient number, since it is larger than the sum of its proper divisors (1300733383923).

1964920925709 is a wasteful number, since it uses less digits than its factorization.

1964920925709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267786 (or 267783 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 63.

The spelling of 1964920925709 in words is "one trillion, nine hundred sixty-four billion, nine hundred twenty million, nine hundred twenty-five thousand, seven hundred nine".