1969340745 has 16 divisors (see below), whose sum is σ = 3152331072. Its totient is φ = 1049853120.

The previous prime is 1969340731. The next prime is 1969340777. The reversal of 1969340745 is 5470439691.

It is not a de Polignac number, because 1969340745 - 2⁸ = 1969340489 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1969340694 and 1969340703.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7879 + ... + 63251.

It is an arithmetic number, because the mean of its divisors is an integer number (197020692).

Almost surely, 2^1969340745 is an apocalyptic number.

1969340745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1969340745 is a deficient number, since it is larger than the sum of its proper divisors (1182990327).

1969340745 is a wasteful number, since it uses less digits than its factorization.

1969340745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57752.

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 1969340745 is about 44377.2548159527. The cubic root of 1969340745 is about 1253.4498291176.

The spelling of 1969340745 in words is "one billion, nine hundred sixty-nine million, three hundred forty thousand, seven hundred forty-five".