1083431378 has 4 divisors (see below), whose sum is σ = 1625147070. Its totient is φ = 541715688.

The previous prime is 1083431351. The next prime is 1083431411. The reversal of 1083431378 is 8731343801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808435489 + 274995889 = 28433^2 + 16583^2 .

It is a super-6 number, since 6×1083431378⁶ (a number of 55 digits) contains 666666 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270857843 + ... + 270857846.

Almost surely, 2^1083431378 is an apocalyptic number.

1083431378 is a deficient number, since it is larger than the sum of its proper divisors (541715692).

1083431378 is an equidigital number, since it uses as much as digits as its factorization.

1083431378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541715691.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1083431378 is about 32915.5188019269. The cubic root of 1083431378 is about 1027.0710070123.

The spelling of 1083431378 in words is "one billion, eighty-three million, four hundred thirty-one thousand, three hundred seventy-eight".