1378901746 has 8 divisors (see below), whose sum is σ = 2068512300. Its totient is φ = 689397648.

The previous prime is 1378901743. The next prime is 1378901749. The reversal of 1378901746 is 6471098731.

It is an interprime number because it is at equal distance from previous prime (1378901743) and next prime (1378901749).

It can be written as a sum of positive squares in 2 ways, for example, as 1091972025 + 286929721 = 33045^2 + 16939^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1378901696 and 1378901705.

It is not an unprimeable number, because it can be changed into a prime (1378901743) 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, 29080 + ... + 60028.

Almost surely, 2^1378901746 is an apocalyptic number.

1378901746 is a deficient number, since it is larger than the sum of its proper divisors (689610554).

1378901746 is a wasteful number, since it uses less digits than its factorization.

1378901746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53228.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1378901746 is about 37133.5662978928. The cubic root of 1378901746 is about 1113.0408586873.

The spelling of 1378901746 in words is "one billion, three hundred seventy-eight million, nine hundred one thousand, seven hundred forty-six".