1490552378 has 8 divisors (see below), whose sum is σ = 2555232672. Its totient is φ = 638808156.

The previous prime is 1490552339. The next prime is 1490552381. The reversal of 1490552378 is 8732550941.

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

It is a super-2 number, since 2×1490552378² = 4443492783122909768, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53234000 + ... + 53234027.

It is an arithmetic number, because the mean of its divisors is an integer number (319404084).

Almost surely, 2^1490552378 is an apocalyptic number.

1490552378 is a deficient number, since it is larger than the sum of its proper divisors (1064680294).

1490552378 is a wasteful number, since it uses less digits than its factorization.

1490552378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106468036.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1490552378 is about 38607.6725276207. The cubic root of 1490552378 is about 1142.3058841826.

The spelling of 1490552378 in words is "one billion, four hundred ninety million, five hundred fifty-two thousand, three hundred seventy-eight".