1964923749061 has 16 divisors (see below), whose sum is σ = 2420055477504. Its totient is φ = 1553579938944.

The previous prime is 1964923749059. The next prime is 1964923749067. The reversal of 1964923749061 is 1609473294691.

It is a cyclic number.

It is not a de Polignac number, because 1964923749061 - 2¹ = 1964923749059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964923749067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7403641 + ... + 7664446.

It is an arithmetic number, because the mean of its divisors is an integer number (151253467344).

Almost surely, 2^{1964923749061} is an apocalyptic number.

It is an amenable number.

1964923749061 is a deficient number, since it is larger than the sum of its proper divisors (455131728443).

1964923749061 is a wasteful number, since it uses less digits than its factorization.

1964923749061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15069540.

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 1964923749061 in words is "one trillion, nine hundred sixty-four billion, nine hundred twenty-three million, seven hundred forty-nine thousand, sixty-one".