1965087380 has 24 divisors (see below), whose sum is σ = 4130511840. Its totient is φ = 785305760.

The previous prime is 1965087349. The next prime is 1965087431. The reversal of 1965087380 is 837805691.

It is a happy number.

It is a super-2 number, since 2×1965087380² = 7723136822070528800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23210 + ... + 66849.

It is an arithmetic number, because the mean of its divisors is an integer number (172104660).

Almost surely, 2^1965087380 is an apocalyptic number.

1965087380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1965087380 is an abundant number, since it is smaller than the sum of its proper divisors (2165424460).

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

1965087380 is a wasteful number, since it uses less digits than its factorization.

1965087380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91159 (or 91157 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1965087380 is about 44329.3061078109. The cubic root of 1965087380 is about 1252.5467819972.

The spelling of 1965087380 in words is "one billion, nine hundred sixty-five million, eighty-seven thousand, three hundred eighty".