1545978967 has 4 divisors (see below), whose sum is σ = 1664900440. Its totient is φ = 1427057496.

The previous prime is 1545978949. The next prime is 1545978983. The reversal of 1545978967 is 7698795451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7698795451 = 23 ⋅334730237.

It is a cyclic number.

It is not a de Polignac number, because 1545978967 - 2¹¹ = 1545976919 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 (1545978367) 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, 59460717 + ... + 59460742.

It is an arithmetic number, because the mean of its divisors is an integer number (416225110).

Almost surely, 2^1545978967 is an apocalyptic number.

1545978967 is a deficient number, since it is larger than the sum of its proper divisors (118921473).

1545978967 is a wasteful number, since it uses less digits than its factorization.

1545978967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118921472.

The product of its digits is 19051200, while the sum is 61.

The square root of 1545978967 is about 39318.9390370595. The cubic root of 1545978967 is about 1156.2929037423.

The spelling of 1545978967 in words is "one billion, five hundred forty-five million, nine hundred seventy-eight thousand, nine hundred sixty-seven".