1378732330 has 8 divisors (see below), whose sum is σ = 2481718212. Its totient is φ = 551492928.

The previous prime is 1378732319. The next prime is 1378732337. The reversal of 1378732330 is 332378731.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1372183849 + 6548481 = 37043^2 + 2559^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1378732330.

It is not an unprimeable number, because it can be changed into a prime (1378732337) 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, 68936607 + ... + 68936626.

Almost surely, 2^1378732330 is an apocalyptic number.

1378732330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378732330 is a deficient number, since it is larger than the sum of its proper divisors (1102985882).

1378732330 is a wasteful number, since it uses less digits than its factorization.

1378732330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137873240.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 1378732330 is about 37131.2850572129. The cubic root of 1378732330 is about 1112.9952729754.

The spelling of 1378732330 in words is "one billion, three hundred seventy-eight million, seven hundred thirty-two thousand, three hundred thirty".