1020173740 has 48 divisors (see below), whose sum is σ = 2367029952. Its totient is φ = 367364096.

The previous prime is 1020173729. The next prime is 1020173741. The reversal of 1020173740 is 473710201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1020173741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57409 + ... + 73048.

It is an arithmetic number, because the mean of its divisors is an integer number (49313124).

Almost surely, 2^1020173740 is an apocalyptic number.

1020173740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020173740 is an abundant number, since it is smaller than the sum of its proper divisors (1346856212).

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

1020173740 is a wasteful number, since it uses less digits than its factorization.

1020173740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130506 (or 130504 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1020173740 is about 31940.1587347339. The cubic root of 1020173740 is about 1006.6798601159.

Adding to 1020173740 its reverse (473710201), we get a palindrome (1493883941).

The spelling of 1020173740 in words is "one billion, twenty million, one hundred seventy-three thousand, seven hundred forty".