1380770551 has 4 divisors (see below), whose sum is σ = 1418088712. Its totient is φ = 1343452392.

The previous prime is 1380770519. The next prime is 1380770561. The reversal of 1380770551 is 1550770831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1550770831 = 53 ⋅29259827.

It is a cyclic number.

It is not a de Polignac number, because 1380770551 - 2⁵ = 1380770519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 37318123 = 1380770551 / (1 + 3 + 8 + 0 + 7 + 7 + 0 + 5 + 5 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380770551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380770561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18659025 + ... + 18659098.

It is an arithmetic number, because the mean of its divisors is an integer number (354522178).

Almost surely, 2^1380770551 is an apocalyptic number.

1380770551 is a deficient number, since it is larger than the sum of its proper divisors (37318161).

1380770551 is an equidigital number, since it uses as much as digits as its factorization.

1380770551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37318160.

The product of its (nonzero) digits is 29400, while the sum is 37.

The square root of 1380770551 is about 37158.7210624908. The cubic root of 1380770551 is about 1113.5434609322.

The spelling of 1380770551 in words is "one billion, three hundred eighty million, seven hundred seventy thousand, five hundred fifty-one".