1919942502 has 16 divisors (see below), whose sum is σ = 3845132400. Its totient is φ = 639106272.

The previous prime is 1919942491. The next prime is 1919942509. The reversal of 1919942502 is 2052499191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919942509) 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, 213877 + ... + 222672.

It is an arithmetic number, because the mean of its divisors is an integer number (240320775).

Almost surely, 2^1919942502 is an apocalyptic number.

1919942502 is an abundant number, since it is smaller than the sum of its proper divisors (1925189898).

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

1919942502 is a wasteful number, since it uses less digits than its factorization.

1919942502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437287.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1919942502 is about 43817.1484923426. The cubic root of 1919942502 is about 1242.8805953372.

The spelling of 1919942502 in words is "one billion, nine hundred nineteen million, nine hundred forty-two thousand, five hundred two".