1392854820 has 48 divisors (see below), whose sum is σ = 4457136768. Its totient is φ = 318366720.

The previous prime is 1392854807. The next prime is 1392854821. The reversal of 1392854820 is 284582931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1392854821) 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, 1657741 + ... + 1658580.

It is an arithmetic number, because the mean of its divisors is an integer number (92857016).

Almost surely, 2^1392854820 is an apocalyptic number.

1392854820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392854820 is an abundant number, since it is smaller than the sum of its proper divisors (3064281948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1392854820 is a wasteful number, since it uses less digits than its factorization.

1392854820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316340 (or 3316338 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1392854820 is about 37320.9702446225. The cubic root of 1392854820 is about 1116.7825442482.

The spelling of 1392854820 in words is "one billion, three hundred ninety-two million, eight hundred fifty-four thousand, eight hundred twenty".