1379777045 has 8 divisors (see below), whose sum is σ = 1670923320. Its totient is φ = 1093694400.

The previous prime is 1379777039. The next prime is 1379777071. The reversal of 1379777045 is 5407779731.

It can be written as a sum of positive squares in 4 ways, for example, as 536339281 + 843437764 = 23159^2 + 29042^2 .

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

It is not a de Polignac number, because 1379777045 - 2¹⁴ = 1379760661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1379776984 and 1379777002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1265306 + ... + 1266395.

It is an arithmetic number, because the mean of its divisors is an integer number (208865415).

Almost surely, 2^1379777045 is an apocalyptic number.

It is an amenable number.

1379777045 is a deficient number, since it is larger than the sum of its proper divisors (291146275).

1379777045 is a wasteful number, since it uses less digits than its factorization.

1379777045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531815.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The square root of 1379777045 is about 37145.3502473728. The cubic root of 1379777045 is about 1113.2763208302.

The spelling of 1379777045 in words is "one billion, three hundred seventy-nine million, seven hundred seventy-seven thousand, forty-five".