1384978245 has 64 divisors (see below), whose sum is σ = 2595815424. Its totient is φ = 617460480.

The previous prime is 1384978241. The next prime is 1384978247. The reversal of 1384978245 is 5428794831.

It is a happy number.

It is not a de Polignac number, because 1384978245 - 2² = 1384978241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384978241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1062264 + ... + 1063566.

It is an arithmetic number, because the mean of its divisors is an integer number (40559616).

Almost surely, 2^1384978245 is an apocalyptic number.

1384978245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1384978245 is a deficient number, since it is larger than the sum of its proper divisors (1210837179).

1384978245 is a wasteful number, since it uses less digits than its factorization.

1384978245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its digits is 1935360, while the sum is 51.

The square root of 1384978245 is about 37215.2958472723. The cubic root of 1384978245 is about 1114.6734335579.

The spelling of 1384978245 in words is "one billion, three hundred eighty-four million, nine hundred seventy-eight thousand, two hundred forty-five".