1097790490 has 8 divisors (see below), whose sum is σ = 1976022900. Its totient is φ = 439116192.

The previous prime is 1097790479. The next prime is 1097790509. The reversal of 1097790490 is 940977901.

It can be written as a sum of positive squares in 2 ways, for example, as 1081686321 + 16104169 = 32889^2 + 4013^2 .

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 1097790490.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54889515 + ... + 54889534.

Almost surely, 2^1097790490 is an apocalyptic number.

1097790490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1097790490 is a deficient number, since it is larger than the sum of its proper divisors (878232410).

1097790490 is a wasteful number, since it uses less digits than its factorization.

1097790490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109779056.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 1097790490 is about 33132.9215433834. The cubic root of 1097790490 is about 1031.5884905858.

The spelling of 1097790490 in words is "one billion, ninety-seven million, seven hundred ninety thousand, four hundred ninety".