1378513227 has 48 divisors (see below), whose sum is σ = 2321318400. Its totient is φ = 727036128.

The previous prime is 1378513217. The next prime is 1378513247. The reversal of 1378513227 is 7223158731.

It is not a de Polignac number, because 1378513227 - 2⁶ = 1378513163 is a prime.

It is a super-4 number, since 4×1378513227⁴ (a number of 38 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378513217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169938 + ... + 177864.

It is an arithmetic number, because the mean of its divisors is an integer number (48360800).

Almost surely, 2^1378513227 is an apocalyptic number.

1378513227 is a deficient number, since it is larger than the sum of its proper divisors (942805173).

1378513227 is an equidigital number, since it uses as much as digits as its factorization.

1378513227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7977 (or 7950 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 1378513227 is about 37128.3345573162. The cubic root of 1378513227 is about 1112.9363121660.

It can be divided in two parts, 1378 and 513227, that added together give a triangular number (514605 = T₁₀₁₄).

The spelling of 1378513227 in words is "one billion, three hundred seventy-eight million, five hundred thirteen thousand, two hundred twenty-seven".