1390863745 has 16 divisors (see below), whose sum is σ = 1785689280. Its totient is φ = 1036843200.

The previous prime is 1390863743. The next prime is 1390863769. The reversal of 1390863745 is 5473680931.

It is not a de Polignac number, because 1390863745 - 2¹ = 1390863743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1390863695 and 1390863704.

It is not an unprimeable number, because it can be changed into a prime (1390863743) 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, 114211 + ... + 125800.

It is an arithmetic number, because the mean of its divisors is an integer number (111605580).

Almost surely, 2^1390863745 is an apocalyptic number.

It is an amenable number.

1390863745 is a deficient number, since it is larger than the sum of its proper divisors (394825535).

1390863745 is a wasteful number, since it uses less digits than its factorization.

1390863745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240096.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1390863745 is about 37294.2856882928. The cubic root of 1390863745 is about 1116.2501465297.

The spelling of 1390863745 in words is "one billion, three hundred ninety million, eight hundred sixty-three thousand, seven hundred forty-five".