1939956465 has 16 divisors (see below), whose sum is σ = 3154815936. Its totient is φ = 1017681600.

The previous prime is 1939956461. The next prime is 1939956467. The reversal of 1939956465 is 5646599391.

It is a happy number.

1939956465 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1939956465 - 2² = 1939956461 is a prime.

It is a super-3 number, since 3×1939956465³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1939956461) 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, 1059171 + ... + 1061000.

It is an arithmetic number, because the mean of its divisors is an integer number (197175996).

Almost surely, 2^1939956465 is an apocalyptic number.

1939956465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1939956465 is a deficient number, since it is larger than the sum of its proper divisors (1214859471).

1939956465 is a wasteful number, since it uses less digits than its factorization.

1939956465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120240.

The product of its digits is 7873200, while the sum is 57.

The square root of 1939956465 is about 44044.9368826883. The cubic root of 1939956465 is about 1247.1843751004.

The spelling of 1939956465 in words is "one billion, nine hundred thirty-nine million, nine hundred fifty-six thousand, four hundred sixty-five".