1365948943 has 16 divisors (see below), whose sum is σ = 1430572320. Its totient is φ = 1302912000.

The previous prime is 1365948901. The next prime is 1365948959. The reversal of 1365948943 is 3498495631.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1365948943 - 2⁹ = 1365948431 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 (1365948643) 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, 1136743 + ... + 1137943.

It is an arithmetic number, because the mean of its divisors is an integer number (89410770).

Almost surely, 2^1365948943 is an apocalyptic number.

1365948943 is a deficient number, since it is larger than the sum of its proper divisors (64623377).

1365948943 is a wasteful number, since it uses less digits than its factorization.

1365948943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its digits is 2799360, while the sum is 52.

The square root of 1365948943 is about 36958.7465020122. The cubic root of 1365948943 is about 1109.5447482450.

The spelling of 1365948943 in words is "one billion, three hundred sixty-five million, nine hundred forty-eight thousand, nine hundred forty-three".