1945143770 has 8 divisors (see below), whose sum is σ = 3501258804. Its totient is φ = 778057504.

The previous prime is 1945143769. The next prime is 1945143793. The reversal of 1945143770 is 773415491.

It can be written as a sum of positive squares in 2 ways, for example, as 1770137329 + 175006441 = 42073^2 + 13229^2 .

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, 97257179 + ... + 97257198.

Almost surely, 2^1945143770 is an apocalyptic number.

1945143770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1945143770 is a deficient number, since it is larger than the sum of its proper divisors (1556115034).

1945143770 is a wasteful number, since it uses less digits than its factorization.

1945143770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194514384.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1945143770 is about 44103.7840780131. The cubic root of 1945143770 is about 1248.2950130730.

The spelling of 1945143770 in words is "one billion, nine hundred forty-five million, one hundred forty-three thousand, seven hundred seventy".