1019150020 has 36 divisors (see below), whose sum is σ = 2489640300. Its totient is φ = 349422528.

The previous prime is 1019149979. The next prime is 1019150023. The reversal of 1019150020 is 200519101.

It can be written as a sum of positive squares in 2 ways, for example, as 559133316 + 460016704 = 23646^2 + 21448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1019150020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019150023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518995 + ... + 520954.

It is an arithmetic number, because the mean of its divisors is an integer number (69156675).

Almost surely, 2^1019150020 is an apocalyptic number.

1019150020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019150020 is an abundant number, since it is smaller than the sum of its proper divisors (1470490280).

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

1019150020 is a wasteful number, since it uses less digits than its factorization.

1019150020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039972 (or 1039963 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1019150020 is about 31924.1291188969. The cubic root of 1019150020 is about 1006.3430210162.

Adding to 1019150020 its reverse (200519101), we get a palindrome (1219669121).

The spelling of 1019150020 in words is "one billion, nineteen million, one hundred fifty thousand, twenty".