1019072145 has 64 divisors (see below), whose sum is σ = 2071609344. Its totient is φ = 416136960.

The previous prime is 1019072141. The next prime is 1019072149. The reversal of 1019072145 is 5412709101.

It is an interprime number because it is at equal distance from previous prime (1019072141) and next prime (1019072149).

It is not a de Polignac number, because 1019072145 - 2² = 1019072141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1019072141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30274 + ... + 54356.

It is an arithmetic number, because the mean of its divisors is an integer number (32368896).

Almost surely, 2^1019072145 is an apocalyptic number.

1019072145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1019072145 is an abundant number, since it is smaller than the sum of its proper divisors (1052537199).

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

1019072145 is a wasteful number, since it uses less digits than its factorization.

1019072145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24142.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1019072145 is about 31922.9094068821. The cubic root of 1019072145 is about 1006.3173882316.

The spelling of 1019072145 in words is "one billion, nineteen million, seventy-two thousand, one hundred forty-five".