1975740730 has 8 divisors (see below), whose sum is σ = 3556333332. Its totient is φ = 790296288.

The previous prime is 1975740719. The next prime is 1975740743. The reversal of 1975740730 is 370475791.

It can be written as a sum of positive squares in 2 ways, for example, as 1858213449 + 117527281 = 43107^2 + 10841^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98787027 + ... + 98787046.

Almost surely, 2^1975740730 is an apocalyptic number.

1975740730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1975740730 is a deficient number, since it is larger than the sum of its proper divisors (1580592602).

1975740730 is a wasteful number, since it uses less digits than its factorization.

1975740730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197574080.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 1975740730 is about 44449.3051689225. The cubic root of 1975740730 is about 1254.8061858445.

The spelling of 1975740730 in words is "one billion, nine hundred seventy-five million, seven hundred forty thousand, seven hundred thirty".