1641956734 has 16 divisors (see below), whose sum is σ = 2723646960. Its totient is φ = 736119360.

The previous prime is 1641956731. The next prime is 1641956737. The reversal of 1641956734 is 4376591461.

It is an interprime number because it is at equal distance from previous prime (1641956731) and next prime (1641956737).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641956731) 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, 509589 + ... + 512800.

It is an arithmetic number, because the mean of its divisors is an integer number (170227935).

Almost surely, 2^1641956734 is an apocalyptic number.

1641956734 is a deficient number, since it is larger than the sum of its proper divisors (1081690226).

1641956734 is a wasteful number, since it uses less digits than its factorization.

1641956734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022475.

The product of its digits is 544320, while the sum is 46.

The square root of 1641956734 is about 40521.0653117610. The cubic root of 1641956734 is about 1179.7425307261.

It can be divided in two parts, 16419 and 56734, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 1641956734 in words is "one billion, six hundred forty-one million, nine hundred fifty-six thousand, seven hundred thirty-four".