1989754070 has 16 divisors (see below), whose sum is σ = 3583267200. Its totient is φ = 795521664.

The previous prime is 1989754051. The next prime is 1989754073. The reversal of 1989754070 is 704579891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989754073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24995 + ... + 67854.

It is an arithmetic number, because the mean of its divisors is an integer number (223954200).

Almost surely, 2^1989754070 is an apocalyptic number.

1989754070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1989754070 is a deficient number, since it is larger than the sum of its proper divisors (1593513130).

1989754070 is a wasteful number, since it uses less digits than its factorization.

1989754070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94999.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 1989754070 is about 44606.6594803960. The cubic root of 1989754070 is about 1257.7658548843.

The spelling of 1989754070 in words is "one billion, nine hundred eighty-nine million, seven hundred fifty-four thousand, seventy".