1293680490 has 16 divisors (see below), whose sum is σ = 3104833248. Its totient is φ = 344981456.

The previous prime is 1293680473. The next prime is 1293680519. The reversal of 1293680490 is 940863921.

It is a Curzon 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, 21561312 + ... + 21561371.

It is an arithmetic number, because the mean of its divisors is an integer number (194052078).

Almost surely, 2^1293680490 is an apocalyptic number.

1293680490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1293680490 is an abundant number, since it is smaller than the sum of its proper divisors (1811152758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1293680490 is a wasteful number, since it uses less digits than its factorization.

1293680490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43122693.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1293680490 is about 35967.7701560717. The cubic root of 1293680490 is about 1089.6215306407.

The spelling of 1293680490 in words is "one billion, two hundred ninety-three million, six hundred eighty thousand, four hundred ninety".