1490988478 has 16 divisors (see below), whose sum is σ = 2667110400. Its totient is φ = 611212536.

The previous prime is 1490988461. The next prime is 1490988491. The reversal of 1490988478 is 8748890941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2314878 + ... + 2315521.

It is an arithmetic number, because the mean of its divisors is an integer number (166694400).

Almost surely, 2^1490988478 is an apocalyptic number.

1490988478 is a deficient number, since it is larger than the sum of its proper divisors (1176121922).

1490988478 is a wasteful number, since it uses less digits than its factorization.

1490988478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630431.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The square root of 1490988478 is about 38613.3199556837. The cubic root of 1490988478 is about 1142.4172771194.

The spelling of 1490988478 in words is "one billion, four hundred ninety million, nine hundred eighty-eight thousand, four hundred seventy-eight".