1964888097149 has 4 divisors (see below), whose sum is σ = 1979023982880. Its totient is φ = 1950752211420.

The previous prime is 1964888097131. The next prime is 1964888097191. The reversal of 1964888097149 is 9417908884691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1964888097149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964888091149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7067942657 + ... + 7067942934.

It is an arithmetic number, because the mean of its divisors is an integer number (494755995720).

Almost surely, 2^{1964888097149} is an apocalyptic number.

It is an amenable number.

1964888097149 is a deficient number, since it is larger than the sum of its proper divisors (14135885731).

1964888097149 is a wasteful number, since it uses less digits than its factorization.

1964888097149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135885730.

The product of its (nonzero) digits is 250822656, while the sum is 74.

The spelling of 1964888097149 in words is "one trillion, nine hundred sixty-four billion, eight hundred eighty-eight million, ninety-seven thousand, one hundred forty-nine".