1386452920 has 16 divisors (see below), whose sum is σ = 3119519160. Its totient is φ = 554581152.

The previous prime is 1386452891. The next prime is 1386452929. The reversal of 1386452920 is 292546831.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 34661323 = 1386452920 / (1 + 3 + 8 + 6 + 4 + 5 + 2 + 9 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386452929) 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, 17330622 + ... + 17330701.

Almost surely, 2^1386452920 is an apocalyptic number.

1386452920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386452920 is an abundant number, since it is smaller than the sum of its proper divisors (1733066240).

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

1386452920 is a wasteful number, since it uses less digits than its factorization.

1386452920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34661334 (or 34661330 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1386452920 is about 37235.1033300567. The cubic root of 1386452920 is about 1115.0689146141.

The spelling of 1386452920 in words is "one billion, three hundred eighty-six million, four hundred fifty-two thousand, nine hundred twenty".