1380189451 has 8 divisors (see below), whose sum is σ = 1470841344. Its totient is φ = 1292091240.

The previous prime is 1380189443. The next prime is 1380189457. The reversal of 1380189451 is 1549810831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1380189451 - 2³ = 1380189443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380189457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637305 + ... + 639466.

It is an arithmetic number, because the mean of its divisors is an integer number (183855168).

Almost surely, 2^1380189451 is an apocalyptic number.

1380189451 is a deficient number, since it is larger than the sum of its proper divisors (90651893).

1380189451 is a wasteful number, since it uses less digits than its factorization.

1380189451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276841.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1380189451 is about 37150.9010792471. The cubic root of 1380189451 is about 1113.3872266950.

The spelling of 1380189451 in words is "one billion, three hundred eighty million, one hundred eighty-nine thousand, four hundred fifty-one".